2388 lines
222 KiB
HTML
2388 lines
222 KiB
HTML
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<meta name="description" content="Your first book to learn Data Structure And Algorithm.">
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<meta name="author" content="Krahets">
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<title>列表(List) - Hello 算法</title>
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<script>__md_scope=new URL("../..",location),__md_hash=e=>[...e].reduce((e,_)=>(e<<5)-e+_.charCodeAt(0),0),__md_get=(e,_=localStorage,t=__md_scope)=>JSON.parse(_.getItem(t.pathname+"."+e)),__md_set=(e,_,t=localStorage,a=__md_scope)=>{try{t.setItem(a.pathname+"."+e,JSON.stringify(_))}catch(e){}}</script>
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</head>
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<nav class="md-header__inner md-grid" aria-label="页眉">
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<div class="md-header__topic">
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<span class="md-ellipsis">
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Hello 算法
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</span>
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<div class="md-header__topic" data-md-component="header-topic">
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<span class="md-ellipsis">
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列表(List)
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</span>
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<form class="md-header__option" data-md-component="palette">
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<label class="md-header__button md-icon" for="__search">
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M9.5 3A6.5 6.5 0 0 1 16 9.5c0 1.61-.59 3.09-1.56 4.23l.27.27h.79l5 5-1.5 1.5-5-5v-.79l-.27-.27A6.516 6.516 0 0 1 9.5 16 6.5 6.5 0 0 1 3 9.5 6.5 6.5 0 0 1 9.5 3m0 2C7 5 5 7 5 9.5S7 14 9.5 14 14 12 14 9.5 12 5 9.5 5Z"/></svg>
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<input type="text" class="md-search__input" name="query" aria-label="搜索" placeholder="搜索" autocapitalize="off" autocorrect="off" autocomplete="off" spellcheck="false" data-md-component="search-query" required>
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M9.5 3A6.5 6.5 0 0 1 16 9.5c0 1.61-.59 3.09-1.56 4.23l.27.27h.79l5 5-1.5 1.5-5-5v-.79l-.27-.27A6.516 6.516 0 0 1 9.5 16 6.5 6.5 0 0 1 3 9.5 6.5 6.5 0 0 1 9.5 3m0 2C7 5 5 7 5 9.5S7 14 9.5 14 14 12 14 9.5 12 5 9.5 5Z"/></svg>
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20 11v2H8l5.5 5.5-1.42 1.42L4.16 12l7.92-7.92L13.5 5.5 8 11h12Z"/></svg>
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<nav class="md-search__options" aria-label="查找">
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<a href="javascript:void(0)" class="md-search__icon md-icon" title="分享" aria-label="分享" data-clipboard data-clipboard-text="" data-md-component="search-share" tabindex="-1">
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M18 16.08c-.76 0-1.44.3-1.96.77L8.91 12.7c.05-.23.09-.46.09-.7 0-.24-.04-.47-.09-.7l7.05-4.11c.54.5 1.25.81 2.04.81a3 3 0 0 0 3-3 3 3 0 0 0-3-3 3 3 0 0 0-3 3c0 .24.04.47.09.7L8.04 9.81C7.5 9.31 6.79 9 6 9a3 3 0 0 0-3 3 3 3 0 0 0 3 3c.79 0 1.5-.31 2.04-.81l7.12 4.15c-.05.21-.08.43-.08.66 0 1.61 1.31 2.91 2.92 2.91 1.61 0 2.92-1.3 2.92-2.91A2.92 2.92 0 0 0 18 16.08Z"/></svg>
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<button type="reset" class="md-search__icon md-icon" title="清空当前内容" aria-label="清空当前内容" tabindex="-1">
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<ol class="md-search-result__list"></ol>
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</div>
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<div class="md-header__source">
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<a href="https://github.com/krahets/hello-algo" title="前往仓库" class="md-source" data-md-component="source">
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 496 512"><!--! Font Awesome Free 6.2.1 by @fontawesome - https://fontawesome.com License - https://fontawesome.com/license/free (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License) Copyright 2022 Fonticons, Inc.--><path d="M165.9 397.4c0 2-2.3 3.6-5.2 3.6-3.3.3-5.6-1.3-5.6-3.6 0-2 2.3-3.6 5.2-3.6 3-.3 5.6 1.3 5.6 3.6zm-31.1-4.5c-.7 2 1.3 4.3 4.3 4.9 2.6 1 5.6 0 6.2-2s-1.3-4.3-4.3-5.2c-2.6-.7-5.5.3-6.2 2.3zm44.2-1.7c-2.9.7-4.9 2.6-4.6 4.9.3 2 2.9 3.3 5.9 2.6 2.9-.7 4.9-2.6 4.6-4.6-.3-1.9-3-3.2-5.9-2.9zM244.8 8C106.1 8 0 113.3 0 252c0 110.9 69.8 205.8 169.5 239.2 12.8 2.3 17.3-5.6 17.3-12.1 0-6.2-.3-40.4-.3-61.4 0 0-70 15-84.7-29.8 0 0-11.4-29.1-27.8-36.6 0 0-22.9-15.7 1.6-15.4 0 0 24.9 2 38.6 25.8 21.9 38.6 58.6 27.5 72.9 20.9 2.3-16 8.8-27.1 16-33.7-55.9-6.2-112.3-14.3-112.3-110.5 0-27.5 7.6-41.3 23.6-58.9-2.6-6.5-11.1-33.3 2.6-67.9 20.9-6.5 69 27 69 27 20-5.6 41.5-8.5 62.8-8.5s42.8 2.9 62.8 8.5c0 0 48.1-33.6 69-27 13.7 34.7 5.2 61.4 2.6 67.9 16 17.7 25.8 31.5 25.8 58.9 0 96.5-58.9 104.2-114.8 110.5 9.2 7.9 17 22.9 17 46.4 0 33.7-.3 75.4-.3 83.6 0 6.5 4.6 14.4 17.3 12.1C428.2 457.8 496 362.9 496 252 496 113.3 383.5 8 244.8 8zM97.2 352.9c-1.3 1-1 3.3.7 5.2 1.6 1.6 3.9 2.3 5.2 1 1.3-1 1-3.3-.7-5.2-1.6-1.6-3.9-2.3-5.2-1zm-10.8-8.1c-.7 1.3.3 2.9 2.3 3.9 1.6 1 3.6.7 4.3-.7.7-1.3-.3-2.9-2.3-3.9-2-.6-3.6-.3-4.3.7zm32.4 35.6c-1.6 1.3-1 4.3 1.3 6.2 2.3 2.3 5.2 2.6 6.5 1 1.3-1.3.7-4.3-1.3-6.2-2.2-2.3-5.2-2.6-6.5-1zm-11.4-14.7c-1.6 1-1.6 3.6 0 5.9 1.6 2.3 4.3 3.3 5.6 2.3 1.6-1.3 1.6-3.9 0-6.2-1.4-2.3-4-3.3-5.6-2z"/></svg>
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krahets/hello-algo
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</header>
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<a href="../.." title="Hello 算法" class="md-nav__button md-logo" aria-label="Hello 算法" data-md-component="logo">
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<img src="../../assets/images/logo.png" alt="logo">
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</a>
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Hello 算法
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<label class="md-nav__title" for="__toc">
|
|||
|
<span class="md-nav__icon md-icon"></span>
|
|||
|
目录
|
|||
|
</label>
|
|||
|
<ul class="md-nav__list" data-md-component="toc" data-md-scrollfix>
|
|||
|
|
|||
|
<li class="md-nav__item">
|
|||
|
<a href="#_2" class="md-nav__link">
|
|||
|
列表常用操作
|
|||
|
</a>
|
|||
|
|
|||
|
</li>
|
|||
|
|
|||
|
<li class="md-nav__item">
|
|||
|
<a href="#_3" class="md-nav__link">
|
|||
|
列表简易实现 *
|
|||
|
</a>
|
|||
|
|
|||
|
</li>
|
|||
|
|
|||
|
</ul>
|
|||
|
|
|||
|
</nav>
|
|||
|
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
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|
|||
|
|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item">
|
|||
|
<a href="../summary/" class="md-nav__link">
|
|||
|
小结
|
|||
|
</a>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
</ul>
|
|||
|
</nav>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
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|
|||
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|
|||
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|
|||
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|
|||
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|
|||
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|
|||
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|
|||
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|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item md-nav__item--section md-nav__item--nested">
|
|||
|
|
|||
|
|
|||
|
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_6" type="checkbox" id="__nav_6" >
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
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|
|||
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|
|||
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|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<label class="md-nav__link" for="__nav_6">
|
|||
|
栈与队列
|
|||
|
<span class="md-nav__icon md-icon"></span>
|
|||
|
</label>
|
|||
|
|
|||
|
<nav class="md-nav" aria-label="栈与队列" data-md-level="1">
|
|||
|
<label class="md-nav__title" for="__nav_6">
|
|||
|
<span class="md-nav__icon md-icon"></span>
|
|||
|
栈与队列
|
|||
|
</label>
|
|||
|
<ul class="md-nav__list" data-md-scrollfix>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item">
|
|||
|
<a href="../../chapter_stack_and_queue/stack/" class="md-nav__link">
|
|||
|
栈(Stack)
|
|||
|
</a>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item">
|
|||
|
<a href="../../chapter_stack_and_queue/queue/" class="md-nav__link">
|
|||
|
队列(Queue)
|
|||
|
</a>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item">
|
|||
|
<a href="../../chapter_stack_and_queue/deque/" class="md-nav__link">
|
|||
|
双向队列(Deque)
|
|||
|
</a>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item">
|
|||
|
<a href="../../chapter_stack_and_queue/summary/" class="md-nav__link">
|
|||
|
小结
|
|||
|
</a>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
</ul>
|
|||
|
</nav>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item md-nav__item--section md-nav__item--nested">
|
|||
|
|
|||
|
|
|||
|
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_7" type="checkbox" id="__nav_7" >
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<label class="md-nav__link" for="__nav_7">
|
|||
|
散列表
|
|||
|
<span class="md-nav__icon md-icon"></span>
|
|||
|
</label>
|
|||
|
|
|||
|
<nav class="md-nav" aria-label="散列表" data-md-level="1">
|
|||
|
<label class="md-nav__title" for="__nav_7">
|
|||
|
<span class="md-nav__icon md-icon"></span>
|
|||
|
散列表
|
|||
|
</label>
|
|||
|
<ul class="md-nav__list" data-md-scrollfix>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item">
|
|||
|
<a href="../../chapter_hashing/hash_map/" class="md-nav__link">
|
|||
|
哈希表(HashMap)
|
|||
|
</a>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item">
|
|||
|
<a href="../../chapter_hashing/hash_collision/" class="md-nav__link">
|
|||
|
哈希冲突处理
|
|||
|
</a>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item">
|
|||
|
<a href="../../chapter_hashing/summary/" class="md-nav__link">
|
|||
|
小结
|
|||
|
</a>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
</ul>
|
|||
|
</nav>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item md-nav__item--section md-nav__item--nested">
|
|||
|
|
|||
|
|
|||
|
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_8" type="checkbox" id="__nav_8" >
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<label class="md-nav__link" for="__nav_8">
|
|||
|
二叉树
|
|||
|
<span class="md-nav__icon md-icon"></span>
|
|||
|
</label>
|
|||
|
|
|||
|
<nav class="md-nav" aria-label="二叉树" data-md-level="1">
|
|||
|
<label class="md-nav__title" for="__nav_8">
|
|||
|
<span class="md-nav__icon md-icon"></span>
|
|||
|
二叉树
|
|||
|
</label>
|
|||
|
<ul class="md-nav__list" data-md-scrollfix>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item">
|
|||
|
<a href="../../chapter_tree/binary_tree/" class="md-nav__link">
|
|||
|
二叉树(Binary Tree)
|
|||
|
</a>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item">
|
|||
|
<a href="../../chapter_tree/binary_tree_types/" class="md-nav__link">
|
|||
|
二叉树常见类型
|
|||
|
</a>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item">
|
|||
|
<a href="../../chapter_tree/binary_search_tree/" class="md-nav__link">
|
|||
|
二叉搜索树
|
|||
|
</a>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item">
|
|||
|
<a href="../../chapter_tree/avl_tree/" class="md-nav__link">
|
|||
|
AVL 树 *
|
|||
|
</a>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item">
|
|||
|
<a href="../../chapter_tree/summary/" class="md-nav__link">
|
|||
|
小结
|
|||
|
</a>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
</ul>
|
|||
|
</nav>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item md-nav__item--section md-nav__item--nested">
|
|||
|
|
|||
|
|
|||
|
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_9" type="checkbox" id="__nav_9" >
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<label class="md-nav__link" for="__nav_9">
|
|||
|
查找算法
|
|||
|
<span class="md-nav__icon md-icon"></span>
|
|||
|
</label>
|
|||
|
|
|||
|
<nav class="md-nav" aria-label="查找算法" data-md-level="1">
|
|||
|
<label class="md-nav__title" for="__nav_9">
|
|||
|
<span class="md-nav__icon md-icon"></span>
|
|||
|
查找算法
|
|||
|
</label>
|
|||
|
<ul class="md-nav__list" data-md-scrollfix>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item">
|
|||
|
<a href="../../chapter_searching/linear_search/" class="md-nav__link">
|
|||
|
线性查找
|
|||
|
</a>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item">
|
|||
|
<a href="../../chapter_searching/binary_search/" class="md-nav__link">
|
|||
|
二分查找
|
|||
|
</a>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item">
|
|||
|
<a href="../../chapter_searching/hashing_search/" class="md-nav__link">
|
|||
|
哈希查找
|
|||
|
</a>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item">
|
|||
|
<a href="../../chapter_searching/summary/" class="md-nav__link">
|
|||
|
小结
|
|||
|
</a>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
</ul>
|
|||
|
</nav>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item md-nav__item--section md-nav__item--nested">
|
|||
|
|
|||
|
|
|||
|
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_10" type="checkbox" id="__nav_10" >
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<label class="md-nav__link" for="__nav_10">
|
|||
|
排序算法
|
|||
|
<span class="md-nav__icon md-icon"></span>
|
|||
|
</label>
|
|||
|
|
|||
|
<nav class="md-nav" aria-label="排序算法" data-md-level="1">
|
|||
|
<label class="md-nav__title" for="__nav_10">
|
|||
|
<span class="md-nav__icon md-icon"></span>
|
|||
|
排序算法
|
|||
|
</label>
|
|||
|
<ul class="md-nav__list" data-md-scrollfix>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item">
|
|||
|
<a href="../../chapter_sorting/intro_to_sort/" class="md-nav__link">
|
|||
|
排序简介
|
|||
|
</a>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item">
|
|||
|
<a href="../../chapter_sorting/bubble_sort/" class="md-nav__link">
|
|||
|
冒泡排序
|
|||
|
</a>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item">
|
|||
|
<a href="../../chapter_sorting/insertion_sort/" class="md-nav__link">
|
|||
|
插入排序
|
|||
|
</a>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item">
|
|||
|
<a href="../../chapter_sorting/quick_sort/" class="md-nav__link">
|
|||
|
快速排序
|
|||
|
</a>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
<li class="md-nav__item">
|
|||
|
<a href="../../chapter_sorting/merge_sort/" class="md-nav__link">
|
|||
|
归并排序
|
|||
|
</a>
|
|||
|
</li>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
|
|||
|
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列表常用操作
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<a href="#_3" class="md-nav__link">
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列表简易实现 *
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<a href="https://github.com/krahets/hello-algo/tree/master/docs/chapter_array_and_linkedlist/list.md" title="编辑此页" class="md-content__button md-icon">
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20.71 7.04c.39-.39.39-1.04 0-1.41l-2.34-2.34c-.37-.39-1.02-.39-1.41 0l-1.84 1.83 3.75 3.75M3 17.25V21h3.75L17.81 9.93l-3.75-3.75L3 17.25Z"/></svg>
|
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<h1 id="_1">列表<a class="headerlink" href="#_1" title="Permanent link">¶</a></h1>
|
|||
|
<p><strong>由于长度不可变,数组的实用性大大降低。</strong> 在很多情况下,我们事先并不知道会输入多少数据,这就为数组长度的选择带来了很大困难。长度选小了,需要在添加数据中频繁地扩容数组;长度选大了,又造成内存空间的浪费。</p>
|
|||
|
<p>为了解决此问题,诞生了一种被称为「列表 List」的数据结构。列表可以被理解为长度可变的数组,因此也常被称为「动态数组 Dynamic Array」。列表基于数组实现,继承了数组的优点,同时还可以在程序运行中实时扩容。在列表中,我们可以自由地添加元素,而不用担心超过容量限制。</p>
|
|||
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<h2 id="_2">列表常用操作<a class="headerlink" href="#_2" title="Permanent link">¶</a></h2>
|
|||
|
<p><strong>初始化列表。</strong> 我们通常使用 <code>Integer[]</code> 包装类和 <code>Arrays.asList()</code> 作为中转,来初始化一个带有初始值的列表。</p>
|
|||
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<div class="tabbed-set tabbed-alternate" data-tabs="1:8"><input checked="checked" id="__tabbed_1_1" name="__tabbed_1" type="radio" /><input id="__tabbed_1_2" name="__tabbed_1" type="radio" /><input id="__tabbed_1_3" name="__tabbed_1" type="radio" /><input id="__tabbed_1_4" name="__tabbed_1" type="radio" /><input id="__tabbed_1_5" name="__tabbed_1" type="radio" /><input id="__tabbed_1_6" name="__tabbed_1" type="radio" /><input id="__tabbed_1_7" name="__tabbed_1" type="radio" /><input id="__tabbed_1_8" name="__tabbed_1" type="radio" /><div class="tabbed-labels"><label for="__tabbed_1_1">Java</label><label for="__tabbed_1_2">C++</label><label for="__tabbed_1_3">Python</label><label for="__tabbed_1_4">Go</label><label for="__tabbed_1_5">JavaScript</label><label for="__tabbed_1_6">TypeScript</label><label for="__tabbed_1_7">C</label><label for="__tabbed_1_8">C#</label></div>
|
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<div class="tabbed-content">
|
|||
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<div class="tabbed-block">
|
|||
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<div class="highlight"><span class="filename">list.java</span><pre><span></span><code><a id="__codelineno-0-1" name="__codelineno-0-1" href="#__codelineno-0-1"></a><span class="cm">/* 初始化列表 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-0-2" name="__codelineno-0-2" href="#__codelineno-0-2"></a><span class="c1">// 注意数组的元素类型是 int[] 的包装类 Integer[]</span><span class="w"></span>
|
|||
|
<a id="__codelineno-0-3" name="__codelineno-0-3" href="#__codelineno-0-3"></a><span class="n">Integer</span><span class="o">[]</span><span class="w"> </span><span class="n">numbers</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">new</span><span class="w"> </span><span class="n">Integer</span><span class="o">[]</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="mi">1</span><span class="p">,</span><span class="w"> </span><span class="mi">3</span><span class="p">,</span><span class="w"> </span><span class="mi">2</span><span class="p">,</span><span class="w"> </span><span class="mi">5</span><span class="p">,</span><span class="w"> </span><span class="mi">4</span><span class="w"> </span><span class="p">};</span><span class="w"></span>
|
|||
|
<a id="__codelineno-0-4" name="__codelineno-0-4" href="#__codelineno-0-4"></a><span class="n">List</span><span class="o"><</span><span class="n">Integer</span><span class="o">></span><span class="w"> </span><span class="n">list</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">new</span><span class="w"> </span><span class="n">ArrayList</span><span class="o"><></span><span class="p">(</span><span class="n">Arrays</span><span class="p">.</span><span class="na">asList</span><span class="p">(</span><span class="n">numbers</span><span class="p">));</span><span class="w"></span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.cpp</span><pre><span></span><code><a id="__codelineno-1-1" name="__codelineno-1-1" href="#__codelineno-1-1"></a><span class="cm">/* 初始化列表 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-1-2" name="__codelineno-1-2" href="#__codelineno-1-2"></a><span class="n">vector</span><span class="o"><</span><span class="kt">int</span><span class="o">></span><span class="w"> </span><span class="n">list</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="mi">1</span><span class="p">,</span><span class="w"> </span><span class="mi">3</span><span class="p">,</span><span class="w"> </span><span class="mi">2</span><span class="p">,</span><span class="w"> </span><span class="mi">5</span><span class="p">,</span><span class="w"> </span><span class="mi">4</span><span class="w"> </span><span class="p">};</span><span class="w"></span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.py</span><pre><span></span><code><a id="__codelineno-2-1" name="__codelineno-2-1" href="#__codelineno-2-1"></a><span class="sd">""" 初始化列表 """</span>
|
|||
|
<a id="__codelineno-2-2" name="__codelineno-2-2" href="#__codelineno-2-2"></a><span class="nb">list</span> <span class="o">=</span> <span class="p">[</span><span class="mi">1</span><span class="p">,</span> <span class="mi">3</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">5</span><span class="p">,</span> <span class="mi">4</span><span class="p">]</span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
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<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.go</span><pre><span></span><code><a id="__codelineno-3-1" name="__codelineno-3-1" href="#__codelineno-3-1"></a>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.js</span><pre><span></span><code><a id="__codelineno-4-1" name="__codelineno-4-1" href="#__codelineno-4-1"></a><span class="cm">/* 初始化列表 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-4-2" name="__codelineno-4-2" href="#__codelineno-4-2"></a><span class="kd">const</span><span class="w"> </span><span class="nx">list</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">[</span><span class="mf">1</span><span class="p">,</span><span class="w"> </span><span class="mf">3</span><span class="p">,</span><span class="w"> </span><span class="mf">2</span><span class="p">,</span><span class="w"> </span><span class="mf">5</span><span class="p">,</span><span class="w"> </span><span class="mf">4</span><span class="p">];</span><span class="w"></span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.ts</span><pre><span></span><code><a id="__codelineno-5-1" name="__codelineno-5-1" href="#__codelineno-5-1"></a><span class="cm">/* 初始化列表 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-5-2" name="__codelineno-5-2" href="#__codelineno-5-2"></a><span class="kd">const</span><span class="w"> </span><span class="nx">list</span><span class="o">:</span><span class="w"> </span><span class="kt">number</span><span class="p">[]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">[</span><span class="mf">1</span><span class="p">,</span><span class="w"> </span><span class="mf">3</span><span class="p">,</span><span class="w"> </span><span class="mf">2</span><span class="p">,</span><span class="w"> </span><span class="mf">5</span><span class="p">,</span><span class="w"> </span><span class="mf">4</span><span class="p">];</span><span class="w"></span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.c</span><pre><span></span><code><a id="__codelineno-6-1" name="__codelineno-6-1" href="#__codelineno-6-1"></a>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.cs</span><pre><span></span><code><a id="__codelineno-7-1" name="__codelineno-7-1" href="#__codelineno-7-1"></a>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
</div>
|
|||
|
</div>
|
|||
|
<p><strong>访问与更新元素。</strong> 列表的底层数据结构是数组,因此可以在 <span class="arithmatex">\(O(1)\)</span> 时间内访问与更新元素,效率很高。</p>
|
|||
|
<div class="tabbed-set tabbed-alternate" data-tabs="2:8"><input checked="checked" id="__tabbed_2_1" name="__tabbed_2" type="radio" /><input id="__tabbed_2_2" name="__tabbed_2" type="radio" /><input id="__tabbed_2_3" name="__tabbed_2" type="radio" /><input id="__tabbed_2_4" name="__tabbed_2" type="radio" /><input id="__tabbed_2_5" name="__tabbed_2" type="radio" /><input id="__tabbed_2_6" name="__tabbed_2" type="radio" /><input id="__tabbed_2_7" name="__tabbed_2" type="radio" /><input id="__tabbed_2_8" name="__tabbed_2" type="radio" /><div class="tabbed-labels"><label for="__tabbed_2_1">Java</label><label for="__tabbed_2_2">C++</label><label for="__tabbed_2_3">Python</label><label for="__tabbed_2_4">Go</label><label for="__tabbed_2_5">JavaScript</label><label for="__tabbed_2_6">TypeScript</label><label for="__tabbed_2_7">C</label><label for="__tabbed_2_8">C#</label></div>
|
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|
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|
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<div class="highlight"><span class="filename">list.java</span><pre><span></span><code><a id="__codelineno-8-1" name="__codelineno-8-1" href="#__codelineno-8-1"></a><span class="cm">/* 访问元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-8-2" name="__codelineno-8-2" href="#__codelineno-8-2"></a><span class="kt">int</span><span class="w"> </span><span class="n">num</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">list</span><span class="p">.</span><span class="na">get</span><span class="p">(</span><span class="mi">1</span><span class="p">);</span><span class="w"> </span><span class="c1">// 访问索引 1 处的元素</span><span class="w"></span>
|
|||
|
<a id="__codelineno-8-3" name="__codelineno-8-3" href="#__codelineno-8-3"></a>
|
|||
|
<a id="__codelineno-8-4" name="__codelineno-8-4" href="#__codelineno-8-4"></a><span class="cm">/* 更新元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-8-5" name="__codelineno-8-5" href="#__codelineno-8-5"></a><span class="n">list</span><span class="p">.</span><span class="na">set</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">);</span><span class="w"> </span><span class="c1">// 将索引 1 处的元素更新为 0</span><span class="w"></span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.cpp</span><pre><span></span><code><a id="__codelineno-9-1" name="__codelineno-9-1" href="#__codelineno-9-1"></a><span class="cm">/* 访问元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-9-2" name="__codelineno-9-2" href="#__codelineno-9-2"></a><span class="kt">int</span><span class="w"> </span><span class="n">num</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">list</span><span class="p">[</span><span class="mi">1</span><span class="p">];</span><span class="w"> </span><span class="c1">// 访问索引 1 处的元素</span>
|
|||
|
<a id="__codelineno-9-3" name="__codelineno-9-3" href="#__codelineno-9-3"></a>
|
|||
|
<a id="__codelineno-9-4" name="__codelineno-9-4" href="#__codelineno-9-4"></a><span class="cm">/* 更新元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-9-5" name="__codelineno-9-5" href="#__codelineno-9-5"></a><span class="n">list</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="c1">// 将索引 1 处的元素更新为 0</span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.py</span><pre><span></span><code><a id="__codelineno-10-1" name="__codelineno-10-1" href="#__codelineno-10-1"></a><span class="sd">""" 访问元素 """</span>
|
|||
|
<a id="__codelineno-10-2" name="__codelineno-10-2" href="#__codelineno-10-2"></a><span class="n">num</span> <span class="o">=</span> <span class="nb">list</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="c1"># 访问索引 1 处的元素</span>
|
|||
|
<a id="__codelineno-10-3" name="__codelineno-10-3" href="#__codelineno-10-3"></a>
|
|||
|
<a id="__codelineno-10-4" name="__codelineno-10-4" href="#__codelineno-10-4"></a><span class="sd">""" 更新元素 """</span>
|
|||
|
<a id="__codelineno-10-5" name="__codelineno-10-5" href="#__codelineno-10-5"></a><span class="nb">list</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="o">=</span> <span class="mi">0</span> <span class="c1"># 将索引 1 处的元素更新为 0</span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.go</span><pre><span></span><code><a id="__codelineno-11-1" name="__codelineno-11-1" href="#__codelineno-11-1"></a>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.js</span><pre><span></span><code><a id="__codelineno-12-1" name="__codelineno-12-1" href="#__codelineno-12-1"></a><span class="cm">/* 访问元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-12-2" name="__codelineno-12-2" href="#__codelineno-12-2"></a><span class="kd">const</span><span class="w"> </span><span class="nx">num</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">list</span><span class="p">[</span><span class="mf">1</span><span class="p">];</span><span class="w"></span>
|
|||
|
<a id="__codelineno-12-3" name="__codelineno-12-3" href="#__codelineno-12-3"></a>
|
|||
|
<a id="__codelineno-12-4" name="__codelineno-12-4" href="#__codelineno-12-4"></a><span class="cm">/* 更新元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-12-5" name="__codelineno-12-5" href="#__codelineno-12-5"></a><span class="nx">list</span><span class="p">[</span><span class="mf">1</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">0</span><span class="p">;</span><span class="w"></span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.ts</span><pre><span></span><code><a id="__codelineno-13-1" name="__codelineno-13-1" href="#__codelineno-13-1"></a><span class="cm">/* 访问元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-13-2" name="__codelineno-13-2" href="#__codelineno-13-2"></a><span class="kd">const</span><span class="w"> </span><span class="nx">num</span><span class="o">:</span><span class="w"> </span><span class="kt">number</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">list</span><span class="p">[</span><span class="mf">1</span><span class="p">];</span><span class="w"></span>
|
|||
|
<a id="__codelineno-13-3" name="__codelineno-13-3" href="#__codelineno-13-3"></a>
|
|||
|
<a id="__codelineno-13-4" name="__codelineno-13-4" href="#__codelineno-13-4"></a><span class="cm">/* 更新元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-13-5" name="__codelineno-13-5" href="#__codelineno-13-5"></a><span class="nx">list</span><span class="p">[</span><span class="mf">1</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">0</span><span class="p">;</span><span class="w"></span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.c</span><pre><span></span><code><a id="__codelineno-14-1" name="__codelineno-14-1" href="#__codelineno-14-1"></a>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.cs</span><pre><span></span><code><a id="__codelineno-15-1" name="__codelineno-15-1" href="#__codelineno-15-1"></a>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
</div>
|
|||
|
</div>
|
|||
|
<p><strong>在列表中添加、插入、删除元素。</strong> 相对于数组,列表可以自由地添加与删除元素。在列表尾部添加元素的时间复杂度为 <span class="arithmatex">\(O(1)\)</span> ,但是插入与删除元素的效率仍与数组一样低,时间复杂度为 <span class="arithmatex">\(O(N)\)</span> 。</p>
|
|||
|
<div class="tabbed-set tabbed-alternate" data-tabs="3:8"><input checked="checked" id="__tabbed_3_1" name="__tabbed_3" type="radio" /><input id="__tabbed_3_2" name="__tabbed_3" type="radio" /><input id="__tabbed_3_3" name="__tabbed_3" type="radio" /><input id="__tabbed_3_4" name="__tabbed_3" type="radio" /><input id="__tabbed_3_5" name="__tabbed_3" type="radio" /><input id="__tabbed_3_6" name="__tabbed_3" type="radio" /><input id="__tabbed_3_7" name="__tabbed_3" type="radio" /><input id="__tabbed_3_8" name="__tabbed_3" type="radio" /><div class="tabbed-labels"><label for="__tabbed_3_1">Java</label><label for="__tabbed_3_2">C++</label><label for="__tabbed_3_3">Python</label><label for="__tabbed_3_4">Go</label><label for="__tabbed_3_5">JavaScript</label><label for="__tabbed_3_6">TypeScript</label><label for="__tabbed_3_7">C</label><label for="__tabbed_3_8">C#</label></div>
|
|||
|
<div class="tabbed-content">
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.java</span><pre><span></span><code><a id="__codelineno-16-1" name="__codelineno-16-1" href="#__codelineno-16-1"></a><span class="cm">/* 清空列表 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-16-2" name="__codelineno-16-2" href="#__codelineno-16-2"></a><span class="n">list</span><span class="p">.</span><span class="na">clear</span><span class="p">();</span><span class="w"></span>
|
|||
|
<a id="__codelineno-16-3" name="__codelineno-16-3" href="#__codelineno-16-3"></a>
|
|||
|
<a id="__codelineno-16-4" name="__codelineno-16-4" href="#__codelineno-16-4"></a><span class="cm">/* 尾部添加元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-16-5" name="__codelineno-16-5" href="#__codelineno-16-5"></a><span class="n">list</span><span class="p">.</span><span class="na">add</span><span class="p">(</span><span class="mi">1</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-16-6" name="__codelineno-16-6" href="#__codelineno-16-6"></a><span class="n">list</span><span class="p">.</span><span class="na">add</span><span class="p">(</span><span class="mi">3</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-16-7" name="__codelineno-16-7" href="#__codelineno-16-7"></a><span class="n">list</span><span class="p">.</span><span class="na">add</span><span class="p">(</span><span class="mi">2</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-16-8" name="__codelineno-16-8" href="#__codelineno-16-8"></a><span class="n">list</span><span class="p">.</span><span class="na">add</span><span class="p">(</span><span class="mi">5</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-16-9" name="__codelineno-16-9" href="#__codelineno-16-9"></a><span class="n">list</span><span class="p">.</span><span class="na">add</span><span class="p">(</span><span class="mi">4</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-16-10" name="__codelineno-16-10" href="#__codelineno-16-10"></a>
|
|||
|
<a id="__codelineno-16-11" name="__codelineno-16-11" href="#__codelineno-16-11"></a><span class="cm">/* 中间插入元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-16-12" name="__codelineno-16-12" href="#__codelineno-16-12"></a><span class="n">list</span><span class="p">.</span><span class="na">add</span><span class="p">(</span><span class="mi">3</span><span class="p">,</span><span class="w"> </span><span class="mi">6</span><span class="p">);</span><span class="w"> </span><span class="c1">// 在索引 3 处插入数字 6</span><span class="w"></span>
|
|||
|
<a id="__codelineno-16-13" name="__codelineno-16-13" href="#__codelineno-16-13"></a>
|
|||
|
<a id="__codelineno-16-14" name="__codelineno-16-14" href="#__codelineno-16-14"></a><span class="cm">/* 删除元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-16-15" name="__codelineno-16-15" href="#__codelineno-16-15"></a><span class="n">list</span><span class="p">.</span><span class="na">remove</span><span class="p">(</span><span class="mi">3</span><span class="p">);</span><span class="w"> </span><span class="c1">// 删除索引 3 处的元素</span><span class="w"></span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.cpp</span><pre><span></span><code><a id="__codelineno-17-1" name="__codelineno-17-1" href="#__codelineno-17-1"></a><span class="cm">/* 清空列表 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-17-2" name="__codelineno-17-2" href="#__codelineno-17-2"></a><span class="n">list</span><span class="p">.</span><span class="n">clear</span><span class="p">();</span><span class="w"></span>
|
|||
|
<a id="__codelineno-17-3" name="__codelineno-17-3" href="#__codelineno-17-3"></a>
|
|||
|
<a id="__codelineno-17-4" name="__codelineno-17-4" href="#__codelineno-17-4"></a><span class="cm">/* 尾部添加元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-17-5" name="__codelineno-17-5" href="#__codelineno-17-5"></a><span class="n">list</span><span class="p">.</span><span class="n">push_back</span><span class="p">(</span><span class="mi">1</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-17-6" name="__codelineno-17-6" href="#__codelineno-17-6"></a><span class="n">list</span><span class="p">.</span><span class="n">push_back</span><span class="p">(</span><span class="mi">3</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-17-7" name="__codelineno-17-7" href="#__codelineno-17-7"></a><span class="n">list</span><span class="p">.</span><span class="n">push_back</span><span class="p">(</span><span class="mi">2</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-17-8" name="__codelineno-17-8" href="#__codelineno-17-8"></a><span class="n">list</span><span class="p">.</span><span class="n">push_back</span><span class="p">(</span><span class="mi">5</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-17-9" name="__codelineno-17-9" href="#__codelineno-17-9"></a><span class="n">list</span><span class="p">.</span><span class="n">push_back</span><span class="p">(</span><span class="mi">4</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-17-10" name="__codelineno-17-10" href="#__codelineno-17-10"></a>
|
|||
|
<a id="__codelineno-17-11" name="__codelineno-17-11" href="#__codelineno-17-11"></a><span class="cm">/* 中间插入元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-17-12" name="__codelineno-17-12" href="#__codelineno-17-12"></a><span class="n">list</span><span class="p">.</span><span class="n">insert</span><span class="p">(</span><span class="n">list</span><span class="p">.</span><span class="n">begin</span><span class="p">()</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="mi">3</span><span class="p">,</span><span class="w"> </span><span class="mi">6</span><span class="p">);</span><span class="w"> </span><span class="c1">// 在索引 3 处插入数字 6</span>
|
|||
|
<a id="__codelineno-17-13" name="__codelineno-17-13" href="#__codelineno-17-13"></a>
|
|||
|
<a id="__codelineno-17-14" name="__codelineno-17-14" href="#__codelineno-17-14"></a><span class="cm">/* 删除元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-17-15" name="__codelineno-17-15" href="#__codelineno-17-15"></a><span class="n">list</span><span class="p">.</span><span class="n">erase</span><span class="p">(</span><span class="n">list</span><span class="p">.</span><span class="n">begin</span><span class="p">()</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="mi">3</span><span class="p">);</span><span class="w"> </span><span class="c1">// 删除索引 3 处的元素</span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.py</span><pre><span></span><code><a id="__codelineno-18-1" name="__codelineno-18-1" href="#__codelineno-18-1"></a><span class="sd">""" 清空列表 """</span>
|
|||
|
<a id="__codelineno-18-2" name="__codelineno-18-2" href="#__codelineno-18-2"></a><span class="nb">list</span><span class="o">.</span><span class="n">clear</span><span class="p">()</span>
|
|||
|
<a id="__codelineno-18-3" name="__codelineno-18-3" href="#__codelineno-18-3"></a>
|
|||
|
<a id="__codelineno-18-4" name="__codelineno-18-4" href="#__codelineno-18-4"></a><span class="sd">""" 尾部添加元素 """</span>
|
|||
|
<a id="__codelineno-18-5" name="__codelineno-18-5" href="#__codelineno-18-5"></a><span class="nb">list</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
|
|||
|
<a id="__codelineno-18-6" name="__codelineno-18-6" href="#__codelineno-18-6"></a><span class="nb">list</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="mi">3</span><span class="p">)</span>
|
|||
|
<a id="__codelineno-18-7" name="__codelineno-18-7" href="#__codelineno-18-7"></a><span class="nb">list</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="mi">2</span><span class="p">)</span>
|
|||
|
<a id="__codelineno-18-8" name="__codelineno-18-8" href="#__codelineno-18-8"></a><span class="nb">list</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="mi">5</span><span class="p">)</span>
|
|||
|
<a id="__codelineno-18-9" name="__codelineno-18-9" href="#__codelineno-18-9"></a><span class="nb">list</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="mi">4</span><span class="p">)</span>
|
|||
|
<a id="__codelineno-18-10" name="__codelineno-18-10" href="#__codelineno-18-10"></a>
|
|||
|
<a id="__codelineno-18-11" name="__codelineno-18-11" href="#__codelineno-18-11"></a><span class="sd">""" 中间插入元素 """</span>
|
|||
|
<a id="__codelineno-18-12" name="__codelineno-18-12" href="#__codelineno-18-12"></a><span class="nb">list</span><span class="o">.</span><span class="n">insert</span><span class="p">(</span><span class="mi">3</span><span class="p">,</span> <span class="mi">6</span><span class="p">)</span> <span class="c1"># 在索引 3 处插入数字 6</span>
|
|||
|
<a id="__codelineno-18-13" name="__codelineno-18-13" href="#__codelineno-18-13"></a>
|
|||
|
<a id="__codelineno-18-14" name="__codelineno-18-14" href="#__codelineno-18-14"></a><span class="sd">""" 删除元素 """</span>
|
|||
|
<a id="__codelineno-18-15" name="__codelineno-18-15" href="#__codelineno-18-15"></a><span class="nb">list</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="mi">3</span><span class="p">)</span> <span class="c1"># 删除索引 3 处的元素</span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.go</span><pre><span></span><code><a id="__codelineno-19-1" name="__codelineno-19-1" href="#__codelineno-19-1"></a>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.js</span><pre><span></span><code><a id="__codelineno-20-1" name="__codelineno-20-1" href="#__codelineno-20-1"></a><span class="cm">/* 清空列表 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-20-2" name="__codelineno-20-2" href="#__codelineno-20-2"></a><span class="nx">list</span><span class="p">.</span><span class="nx">length</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">0</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-20-3" name="__codelineno-20-3" href="#__codelineno-20-3"></a>
|
|||
|
<a id="__codelineno-20-4" name="__codelineno-20-4" href="#__codelineno-20-4"></a><span class="cm">/* 尾部添加元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-20-5" name="__codelineno-20-5" href="#__codelineno-20-5"></a><span class="nx">list</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="mf">1</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-20-6" name="__codelineno-20-6" href="#__codelineno-20-6"></a><span class="nx">list</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="mf">3</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-20-7" name="__codelineno-20-7" href="#__codelineno-20-7"></a><span class="nx">list</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="mf">2</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-20-8" name="__codelineno-20-8" href="#__codelineno-20-8"></a><span class="nx">list</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="mf">5</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-20-9" name="__codelineno-20-9" href="#__codelineno-20-9"></a><span class="nx">list</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="mf">4</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-20-10" name="__codelineno-20-10" href="#__codelineno-20-10"></a>
|
|||
|
<a id="__codelineno-20-11" name="__codelineno-20-11" href="#__codelineno-20-11"></a><span class="cm">/* 中间插入元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-20-12" name="__codelineno-20-12" href="#__codelineno-20-12"></a><span class="nx">list</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="mf">3</span><span class="p">,</span><span class="w"> </span><span class="mf">0</span><span class="p">,</span><span class="w"> </span><span class="mf">6</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-20-13" name="__codelineno-20-13" href="#__codelineno-20-13"></a>
|
|||
|
<a id="__codelineno-20-14" name="__codelineno-20-14" href="#__codelineno-20-14"></a><span class="cm">/* 删除元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-20-15" name="__codelineno-20-15" href="#__codelineno-20-15"></a><span class="nx">list</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="mf">3</span><span class="p">,</span><span class="w"> </span><span class="mf">1</span><span class="p">);</span><span class="w"></span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.ts</span><pre><span></span><code><a id="__codelineno-21-1" name="__codelineno-21-1" href="#__codelineno-21-1"></a><span class="cm">/* 清空列表 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-21-2" name="__codelineno-21-2" href="#__codelineno-21-2"></a><span class="nx">list</span><span class="p">.</span><span class="nx">length</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">0</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-21-3" name="__codelineno-21-3" href="#__codelineno-21-3"></a>
|
|||
|
<a id="__codelineno-21-4" name="__codelineno-21-4" href="#__codelineno-21-4"></a><span class="cm">/* 尾部添加元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-21-5" name="__codelineno-21-5" href="#__codelineno-21-5"></a><span class="nx">list</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="mf">1</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-21-6" name="__codelineno-21-6" href="#__codelineno-21-6"></a><span class="nx">list</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="mf">3</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-21-7" name="__codelineno-21-7" href="#__codelineno-21-7"></a><span class="nx">list</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="mf">2</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-21-8" name="__codelineno-21-8" href="#__codelineno-21-8"></a><span class="nx">list</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="mf">5</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-21-9" name="__codelineno-21-9" href="#__codelineno-21-9"></a><span class="nx">list</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="mf">4</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-21-10" name="__codelineno-21-10" href="#__codelineno-21-10"></a>
|
|||
|
<a id="__codelineno-21-11" name="__codelineno-21-11" href="#__codelineno-21-11"></a><span class="cm">/* 中间插入元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-21-12" name="__codelineno-21-12" href="#__codelineno-21-12"></a><span class="nx">list</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="mf">3</span><span class="p">,</span><span class="w"> </span><span class="mf">0</span><span class="p">,</span><span class="w"> </span><span class="mf">6</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-21-13" name="__codelineno-21-13" href="#__codelineno-21-13"></a>
|
|||
|
<a id="__codelineno-21-14" name="__codelineno-21-14" href="#__codelineno-21-14"></a><span class="cm">/* 删除元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-21-15" name="__codelineno-21-15" href="#__codelineno-21-15"></a><span class="nx">list</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="mf">3</span><span class="p">,</span><span class="w"> </span><span class="mf">1</span><span class="p">);</span><span class="w"></span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.c</span><pre><span></span><code><a id="__codelineno-22-1" name="__codelineno-22-1" href="#__codelineno-22-1"></a>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.cs</span><pre><span></span><code><a id="__codelineno-23-1" name="__codelineno-23-1" href="#__codelineno-23-1"></a>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
</div>
|
|||
|
</div>
|
|||
|
<p><strong>遍历列表。</strong> 与数组一样,列表可以使用索引遍历,也可以使用 <code>for-each</code> 直接遍历。</p>
|
|||
|
<div class="tabbed-set tabbed-alternate" data-tabs="4:8"><input checked="checked" id="__tabbed_4_1" name="__tabbed_4" type="radio" /><input id="__tabbed_4_2" name="__tabbed_4" type="radio" /><input id="__tabbed_4_3" name="__tabbed_4" type="radio" /><input id="__tabbed_4_4" name="__tabbed_4" type="radio" /><input id="__tabbed_4_5" name="__tabbed_4" type="radio" /><input id="__tabbed_4_6" name="__tabbed_4" type="radio" /><input id="__tabbed_4_7" name="__tabbed_4" type="radio" /><input id="__tabbed_4_8" name="__tabbed_4" type="radio" /><div class="tabbed-labels"><label for="__tabbed_4_1">Java</label><label for="__tabbed_4_2">C++</label><label for="__tabbed_4_3">Python</label><label for="__tabbed_4_4">Go</label><label for="__tabbed_4_5">JavaScript</label><label for="__tabbed_4_6">TypeScript</label><label for="__tabbed_4_7">C</label><label for="__tabbed_4_8">C#</label></div>
|
|||
|
<div class="tabbed-content">
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.java</span><pre><span></span><code><a id="__codelineno-24-1" name="__codelineno-24-1" href="#__codelineno-24-1"></a><span class="cm">/* 通过索引遍历列表 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-24-2" name="__codelineno-24-2" href="#__codelineno-24-2"></a><span class="kt">int</span><span class="w"> </span><span class="n">count</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-24-3" name="__codelineno-24-3" href="#__codelineno-24-3"></a><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">i</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">i</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">list</span><span class="p">.</span><span class="na">size</span><span class="p">();</span><span class="w"> </span><span class="n">i</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-24-4" name="__codelineno-24-4" href="#__codelineno-24-4"></a><span class="w"> </span><span class="n">count</span><span class="o">++</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-24-5" name="__codelineno-24-5" href="#__codelineno-24-5"></a><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-24-6" name="__codelineno-24-6" href="#__codelineno-24-6"></a>
|
|||
|
<a id="__codelineno-24-7" name="__codelineno-24-7" href="#__codelineno-24-7"></a><span class="cm">/* 直接遍历列表元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-24-8" name="__codelineno-24-8" href="#__codelineno-24-8"></a><span class="n">count</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-24-9" name="__codelineno-24-9" href="#__codelineno-24-9"></a><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="p">:</span><span class="w"> </span><span class="n">list</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-24-10" name="__codelineno-24-10" href="#__codelineno-24-10"></a><span class="w"> </span><span class="n">count</span><span class="o">++</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-24-11" name="__codelineno-24-11" href="#__codelineno-24-11"></a><span class="p">}</span><span class="w"></span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.cpp</span><pre><span></span><code><a id="__codelineno-25-1" name="__codelineno-25-1" href="#__codelineno-25-1"></a><span class="cm">/* 通过索引遍历列表 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-25-2" name="__codelineno-25-2" href="#__codelineno-25-2"></a><span class="kt">int</span><span class="w"> </span><span class="n">count</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-25-3" name="__codelineno-25-3" href="#__codelineno-25-3"></a><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">i</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">i</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">list</span><span class="p">.</span><span class="n">size</span><span class="p">();</span><span class="w"> </span><span class="n">i</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-25-4" name="__codelineno-25-4" href="#__codelineno-25-4"></a><span class="w"> </span><span class="n">count</span><span class="o">++</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-25-5" name="__codelineno-25-5" href="#__codelineno-25-5"></a><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-25-6" name="__codelineno-25-6" href="#__codelineno-25-6"></a>
|
|||
|
<a id="__codelineno-25-7" name="__codelineno-25-7" href="#__codelineno-25-7"></a><span class="cm">/* 直接遍历列表元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-25-8" name="__codelineno-25-8" href="#__codelineno-25-8"></a><span class="n">count</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-25-9" name="__codelineno-25-9" href="#__codelineno-25-9"></a><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">n</span><span class="w"> </span><span class="o">:</span><span class="w"> </span><span class="n">list</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-25-10" name="__codelineno-25-10" href="#__codelineno-25-10"></a><span class="w"> </span><span class="n">count</span><span class="o">++</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-25-11" name="__codelineno-25-11" href="#__codelineno-25-11"></a><span class="p">}</span><span class="w"></span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.py</span><pre><span></span><code><a id="__codelineno-26-1" name="__codelineno-26-1" href="#__codelineno-26-1"></a><span class="sd">""" 通过索引遍历列表 """</span>
|
|||
|
<a id="__codelineno-26-2" name="__codelineno-26-2" href="#__codelineno-26-2"></a><span class="n">count</span> <span class="o">=</span> <span class="mi">0</span>
|
|||
|
<a id="__codelineno-26-3" name="__codelineno-26-3" href="#__codelineno-26-3"></a><span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="nb">list</span><span class="p">)):</span>
|
|||
|
<a id="__codelineno-26-4" name="__codelineno-26-4" href="#__codelineno-26-4"></a> <span class="n">count</span> <span class="o">+=</span> <span class="mi">1</span>
|
|||
|
<a id="__codelineno-26-5" name="__codelineno-26-5" href="#__codelineno-26-5"></a>
|
|||
|
<a id="__codelineno-26-6" name="__codelineno-26-6" href="#__codelineno-26-6"></a><span class="sd">""" 直接遍历列表元素 """</span>
|
|||
|
<a id="__codelineno-26-7" name="__codelineno-26-7" href="#__codelineno-26-7"></a><span class="n">count</span> <span class="o">=</span> <span class="mi">0</span>
|
|||
|
<a id="__codelineno-26-8" name="__codelineno-26-8" href="#__codelineno-26-8"></a><span class="k">for</span> <span class="n">n</span> <span class="ow">in</span> <span class="nb">list</span><span class="p">:</span>
|
|||
|
<a id="__codelineno-26-9" name="__codelineno-26-9" href="#__codelineno-26-9"></a> <span class="n">count</span> <span class="o">+=</span> <span class="mi">1</span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.go</span><pre><span></span><code><a id="__codelineno-27-1" name="__codelineno-27-1" href="#__codelineno-27-1"></a>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.js</span><pre><span></span><code><a id="__codelineno-28-1" name="__codelineno-28-1" href="#__codelineno-28-1"></a><span class="cm">/* 通过索引遍历列表 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-28-2" name="__codelineno-28-2" href="#__codelineno-28-2"></a><span class="kd">let</span><span class="w"> </span><span class="nx">count</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">0</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-28-3" name="__codelineno-28-3" href="#__codelineno-28-3"></a><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kd">let</span><span class="w"> </span><span class="nx">i</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">0</span><span class="p">;</span><span class="w"> </span><span class="nx">i</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="nx">list</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span><span class="w"> </span><span class="nx">i</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-28-4" name="__codelineno-28-4" href="#__codelineno-28-4"></a><span class="w"> </span><span class="nx">count</span><span class="o">++</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-28-5" name="__codelineno-28-5" href="#__codelineno-28-5"></a><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-28-6" name="__codelineno-28-6" href="#__codelineno-28-6"></a>
|
|||
|
<a id="__codelineno-28-7" name="__codelineno-28-7" href="#__codelineno-28-7"></a><span class="cm">/* 直接遍历列表元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-28-8" name="__codelineno-28-8" href="#__codelineno-28-8"></a><span class="nx">count</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">0</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-28-9" name="__codelineno-28-9" href="#__codelineno-28-9"></a><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kd">const</span><span class="w"> </span><span class="nx">n</span><span class="w"> </span><span class="k">of</span><span class="w"> </span><span class="nx">list</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-28-10" name="__codelineno-28-10" href="#__codelineno-28-10"></a><span class="w"> </span><span class="nx">count</span><span class="o">++</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-28-11" name="__codelineno-28-11" href="#__codelineno-28-11"></a><span class="p">}</span><span class="w"></span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.ts</span><pre><span></span><code><a id="__codelineno-29-1" name="__codelineno-29-1" href="#__codelineno-29-1"></a><span class="cm">/* 通过索引遍历列表 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-29-2" name="__codelineno-29-2" href="#__codelineno-29-2"></a><span class="kd">let</span><span class="w"> </span><span class="nx">count</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">0</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-29-3" name="__codelineno-29-3" href="#__codelineno-29-3"></a><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kd">let</span><span class="w"> </span><span class="nx">i</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">0</span><span class="p">;</span><span class="w"> </span><span class="nx">i</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="nx">list</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span><span class="w"> </span><span class="nx">i</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-29-4" name="__codelineno-29-4" href="#__codelineno-29-4"></a><span class="w"> </span><span class="nx">count</span><span class="o">++</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-29-5" name="__codelineno-29-5" href="#__codelineno-29-5"></a><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-29-6" name="__codelineno-29-6" href="#__codelineno-29-6"></a>
|
|||
|
<a id="__codelineno-29-7" name="__codelineno-29-7" href="#__codelineno-29-7"></a><span class="cm">/* 直接遍历列表元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-29-8" name="__codelineno-29-8" href="#__codelineno-29-8"></a><span class="nx">count</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">0</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-29-9" name="__codelineno-29-9" href="#__codelineno-29-9"></a><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kd">const</span><span class="w"> </span><span class="nx">n</span><span class="w"> </span><span class="k">of</span><span class="w"> </span><span class="nx">list</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-29-10" name="__codelineno-29-10" href="#__codelineno-29-10"></a><span class="w"> </span><span class="nx">count</span><span class="o">++</span><span class="p">;</span><span class="w"></span>
|
|||
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<a id="__codelineno-29-11" name="__codelineno-29-11" href="#__codelineno-29-11"></a><span class="p">}</span><span class="w"></span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
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<div class="tabbed-block">
|
|||
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<div class="highlight"><span class="filename">list.c</span><pre><span></span><code><a id="__codelineno-30-1" name="__codelineno-30-1" href="#__codelineno-30-1"></a>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
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<div class="tabbed-block">
|
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<div class="highlight"><span class="filename">list.cs</span><pre><span></span><code><a id="__codelineno-31-1" name="__codelineno-31-1" href="#__codelineno-31-1"></a>
|
|||
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</code></pre></div>
|
|||
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</div>
|
|||
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</div>
|
|||
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</div>
|
|||
|
<p><strong>拼接两个列表。</strong> 再创建一个新列表 <code>list1</code> ,我们可以将其中一个列表拼接到另一个的尾部。</p>
|
|||
|
<div class="tabbed-set tabbed-alternate" data-tabs="5:8"><input checked="checked" id="__tabbed_5_1" name="__tabbed_5" type="radio" /><input id="__tabbed_5_2" name="__tabbed_5" type="radio" /><input id="__tabbed_5_3" name="__tabbed_5" type="radio" /><input id="__tabbed_5_4" name="__tabbed_5" type="radio" /><input id="__tabbed_5_5" name="__tabbed_5" type="radio" /><input id="__tabbed_5_6" name="__tabbed_5" type="radio" /><input id="__tabbed_5_7" name="__tabbed_5" type="radio" /><input id="__tabbed_5_8" name="__tabbed_5" type="radio" /><div class="tabbed-labels"><label for="__tabbed_5_1">Java</label><label for="__tabbed_5_2">C++</label><label for="__tabbed_5_3">Python</label><label for="__tabbed_5_4">Go</label><label for="__tabbed_5_5">JavaScript</label><label for="__tabbed_5_6">TypeScript</label><label for="__tabbed_5_7">C</label><label for="__tabbed_5_8">C#</label></div>
|
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<div class="tabbed-content">
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<div class="tabbed-block">
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<div class="highlight"><span class="filename">list.java</span><pre><span></span><code><a id="__codelineno-32-1" name="__codelineno-32-1" href="#__codelineno-32-1"></a><span class="cm">/* 拼接两个列表 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-32-2" name="__codelineno-32-2" href="#__codelineno-32-2"></a><span class="n">List</span><span class="o"><</span><span class="n">Integer</span><span class="o">></span><span class="w"> </span><span class="n">list1</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">new</span><span class="w"> </span><span class="n">ArrayList</span><span class="o"><></span><span class="p">(</span><span class="n">Arrays</span><span class="p">.</span><span class="na">asList</span><span class="p">(</span><span class="k">new</span><span class="w"> </span><span class="n">Integer</span><span class="o">[]</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="mi">6</span><span class="p">,</span><span class="w"> </span><span class="mi">8</span><span class="p">,</span><span class="w"> </span><span class="mi">7</span><span class="p">,</span><span class="w"> </span><span class="mi">10</span><span class="p">,</span><span class="w"> </span><span class="mi">9</span><span class="w"> </span><span class="p">}));</span><span class="w"></span>
|
|||
|
<a id="__codelineno-32-3" name="__codelineno-32-3" href="#__codelineno-32-3"></a><span class="n">list</span><span class="p">.</span><span class="na">addAll</span><span class="p">(</span><span class="n">list1</span><span class="p">);</span><span class="w"> </span><span class="c1">// 将列表 list1 拼接到 list 之后</span><span class="w"></span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.cpp</span><pre><span></span><code><a id="__codelineno-33-1" name="__codelineno-33-1" href="#__codelineno-33-1"></a><span class="cm">/* 拼接两个列表 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-33-2" name="__codelineno-33-2" href="#__codelineno-33-2"></a><span class="n">vector</span><span class="o"><</span><span class="kt">int</span><span class="o">></span><span class="w"> </span><span class="n">list1</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="mi">6</span><span class="p">,</span><span class="w"> </span><span class="mi">8</span><span class="p">,</span><span class="w"> </span><span class="mi">7</span><span class="p">,</span><span class="w"> </span><span class="mi">10</span><span class="p">,</span><span class="w"> </span><span class="mi">9</span><span class="w"> </span><span class="p">};</span><span class="w"></span>
|
|||
|
<a id="__codelineno-33-3" name="__codelineno-33-3" href="#__codelineno-33-3"></a><span class="c1">// 将列表 list1 拼接到 list 之后</span>
|
|||
|
<a id="__codelineno-33-4" name="__codelineno-33-4" href="#__codelineno-33-4"></a><span class="n">list</span><span class="p">.</span><span class="n">insert</span><span class="p">(</span><span class="n">list</span><span class="p">.</span><span class="n">end</span><span class="p">(),</span><span class="w"> </span><span class="n">list1</span><span class="p">.</span><span class="n">begin</span><span class="p">(),</span><span class="w"> </span><span class="n">list1</span><span class="p">.</span><span class="n">end</span><span class="p">());</span><span class="w"></span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.py</span><pre><span></span><code><a id="__codelineno-34-1" name="__codelineno-34-1" href="#__codelineno-34-1"></a><span class="sd">""" 拼接两个列表 """</span>
|
|||
|
<a id="__codelineno-34-2" name="__codelineno-34-2" href="#__codelineno-34-2"></a><span class="n">list1</span> <span class="o">=</span> <span class="p">[</span><span class="mi">6</span><span class="p">,</span> <span class="mi">8</span><span class="p">,</span> <span class="mi">7</span><span class="p">,</span> <span class="mi">10</span><span class="p">,</span> <span class="mi">9</span><span class="p">]</span>
|
|||
|
<a id="__codelineno-34-3" name="__codelineno-34-3" href="#__codelineno-34-3"></a><span class="nb">list</span> <span class="o">+=</span> <span class="n">list1</span> <span class="c1"># 将列表 list1 拼接到 list 之后</span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.go</span><pre><span></span><code><a id="__codelineno-35-1" name="__codelineno-35-1" href="#__codelineno-35-1"></a>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.js</span><pre><span></span><code><a id="__codelineno-36-1" name="__codelineno-36-1" href="#__codelineno-36-1"></a><span class="cm">/* 拼接两个列表 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-36-2" name="__codelineno-36-2" href="#__codelineno-36-2"></a><span class="kd">const</span><span class="w"> </span><span class="nx">list1</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">[</span><span class="mf">6</span><span class="p">,</span><span class="w"> </span><span class="mf">8</span><span class="p">,</span><span class="w"> </span><span class="mf">7</span><span class="p">,</span><span class="w"> </span><span class="mf">10</span><span class="p">,</span><span class="w"> </span><span class="mf">9</span><span class="p">];</span><span class="w"></span>
|
|||
|
<a id="__codelineno-36-3" name="__codelineno-36-3" href="#__codelineno-36-3"></a><span class="nx">list</span><span class="p">.</span><span class="nx">push</span><span class="p">(...</span><span class="nx">list1</span><span class="p">);</span><span class="w"></span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.ts</span><pre><span></span><code><a id="__codelineno-37-1" name="__codelineno-37-1" href="#__codelineno-37-1"></a><span class="cm">/* 拼接两个列表 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-37-2" name="__codelineno-37-2" href="#__codelineno-37-2"></a><span class="kd">const</span><span class="w"> </span><span class="nx">list1</span><span class="o">:</span><span class="w"> </span><span class="kt">number</span><span class="p">[]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">[</span><span class="mf">6</span><span class="p">,</span><span class="w"> </span><span class="mf">8</span><span class="p">,</span><span class="w"> </span><span class="mf">7</span><span class="p">,</span><span class="w"> </span><span class="mf">10</span><span class="p">,</span><span class="w"> </span><span class="mf">9</span><span class="p">];</span><span class="w"></span>
|
|||
|
<a id="__codelineno-37-3" name="__codelineno-37-3" href="#__codelineno-37-3"></a><span class="nx">list</span><span class="p">.</span><span class="nx">push</span><span class="p">(...</span><span class="nx">list1</span><span class="p">);</span><span class="w"></span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.c</span><pre><span></span><code><a id="__codelineno-38-1" name="__codelineno-38-1" href="#__codelineno-38-1"></a>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.cs</span><pre><span></span><code><a id="__codelineno-39-1" name="__codelineno-39-1" href="#__codelineno-39-1"></a>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
</div>
|
|||
|
</div>
|
|||
|
<p><strong>排序列表。</strong> 排序也是常用的方法之一,完成列表排序后,我们就可以使用在数组类算法题中经常考察的「二分查找」和「双指针」算法了。</p>
|
|||
|
<div class="tabbed-set tabbed-alternate" data-tabs="6:8"><input checked="checked" id="__tabbed_6_1" name="__tabbed_6" type="radio" /><input id="__tabbed_6_2" name="__tabbed_6" type="radio" /><input id="__tabbed_6_3" name="__tabbed_6" type="radio" /><input id="__tabbed_6_4" name="__tabbed_6" type="radio" /><input id="__tabbed_6_5" name="__tabbed_6" type="radio" /><input id="__tabbed_6_6" name="__tabbed_6" type="radio" /><input id="__tabbed_6_7" name="__tabbed_6" type="radio" /><input id="__tabbed_6_8" name="__tabbed_6" type="radio" /><div class="tabbed-labels"><label for="__tabbed_6_1">Java</label><label for="__tabbed_6_2">C++</label><label for="__tabbed_6_3">Python</label><label for="__tabbed_6_4">Go</label><label for="__tabbed_6_5">JavaScript</label><label for="__tabbed_6_6">TypeScript</label><label for="__tabbed_6_7">C</label><label for="__tabbed_6_8">C#</label></div>
|
|||
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<div class="tabbed-content">
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.java</span><pre><span></span><code><a id="__codelineno-40-1" name="__codelineno-40-1" href="#__codelineno-40-1"></a><span class="cm">/* 排序列表 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-40-2" name="__codelineno-40-2" href="#__codelineno-40-2"></a><span class="n">Collections</span><span class="p">.</span><span class="na">sort</span><span class="p">(</span><span class="n">list</span><span class="p">);</span><span class="w"> </span><span class="c1">// 排序后,列表元素从小到大排列</span><span class="w"></span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.cpp</span><pre><span></span><code><a id="__codelineno-41-1" name="__codelineno-41-1" href="#__codelineno-41-1"></a><span class="cm">/* 排序列表 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-41-2" name="__codelineno-41-2" href="#__codelineno-41-2"></a><span class="n">sort</span><span class="p">(</span><span class="n">list</span><span class="p">.</span><span class="n">begin</span><span class="p">(),</span><span class="w"> </span><span class="n">list</span><span class="p">.</span><span class="n">end</span><span class="p">());</span><span class="w"> </span><span class="c1">// 排序后,列表元素从小到大排列</span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.py</span><pre><span></span><code><a id="__codelineno-42-1" name="__codelineno-42-1" href="#__codelineno-42-1"></a><span class="sd">""" 排序列表 """</span>
|
|||
|
<a id="__codelineno-42-2" name="__codelineno-42-2" href="#__codelineno-42-2"></a><span class="nb">list</span><span class="o">.</span><span class="n">sort</span><span class="p">()</span> <span class="c1"># 排序后,列表元素从小到大排列</span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.go</span><pre><span></span><code><a id="__codelineno-43-1" name="__codelineno-43-1" href="#__codelineno-43-1"></a>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.js</span><pre><span></span><code><a id="__codelineno-44-1" name="__codelineno-44-1" href="#__codelineno-44-1"></a><span class="cm">/* 排序列表 */</span><span class="w"> </span>
|
|||
|
<a id="__codelineno-44-2" name="__codelineno-44-2" href="#__codelineno-44-2"></a><span class="nx">list</span><span class="p">.</span><span class="nx">sort</span><span class="p">((</span><span class="nx">a</span><span class="p">,</span><span class="w"> </span><span class="nx">b</span><span class="p">)</span><span class="w"> </span><span class="p">=></span><span class="w"> </span><span class="nx">a</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="nx">b</span><span class="p">);</span><span class="w"></span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.ts</span><pre><span></span><code><a id="__codelineno-45-1" name="__codelineno-45-1" href="#__codelineno-45-1"></a><span class="cm">/* 排序列表 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-45-2" name="__codelineno-45-2" href="#__codelineno-45-2"></a><span class="nx">list</span><span class="p">.</span><span class="nx">sort</span><span class="p">((</span><span class="nx">a</span><span class="p">,</span><span class="w"> </span><span class="nx">b</span><span class="p">)</span><span class="w"> </span><span class="p">=></span><span class="w"> </span><span class="nx">a</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="nx">b</span><span class="p">);</span><span class="w"> </span><span class="c1">// 排序后,列表元素从小到大排列</span><span class="w"></span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.c</span><pre><span></span><code><a id="__codelineno-46-1" name="__codelineno-46-1" href="#__codelineno-46-1"></a>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">list.cs</span><pre><span></span><code><a id="__codelineno-47-1" name="__codelineno-47-1" href="#__codelineno-47-1"></a>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
</div>
|
|||
|
</div>
|
|||
|
<h2 id="_3">列表简易实现 *<a class="headerlink" href="#_3" title="Permanent link">¶</a></h2>
|
|||
|
<p>为了帮助加深对列表的理解,我们在此提供一个列表的简易版本的实现。需要关注三个核心点:</p>
|
|||
|
<ul>
|
|||
|
<li><strong>初始容量:</strong> 选取一个合理的数组的初始容量 <code>initialCapacity</code> 。在本示例中,我们选择 10 作为初始容量。</li>
|
|||
|
<li><strong>数量记录:</strong> 需要声明一个变量 <code>size</code> ,用来记录列表当前有多少个元素,并随着元素插入与删除实时更新。根据此变量,可以定位列表的尾部,以及判断是否需要扩容。</li>
|
|||
|
<li><strong>扩容机制:</strong> 插入元素有可能导致超出列表容量,此时需要扩容列表,方法是建立一个更大的数组来替换当前数组。需要给定一个扩容倍数 <code>extendRatio</code> ,在本示例中,我们规定每次将数组扩容至之前的 2 倍。</li>
|
|||
|
</ul>
|
|||
|
<p>本示例是为了帮助读者对如何实现列表产生直观的认识。实际编程语言中,列表的实现远比以下代码复杂且标准,感兴趣的读者可以查阅源码学习。</p>
|
|||
|
<div class="tabbed-set tabbed-alternate" data-tabs="7:8"><input checked="checked" id="__tabbed_7_1" name="__tabbed_7" type="radio" /><input id="__tabbed_7_2" name="__tabbed_7" type="radio" /><input id="__tabbed_7_3" name="__tabbed_7" type="radio" /><input id="__tabbed_7_4" name="__tabbed_7" type="radio" /><input id="__tabbed_7_5" name="__tabbed_7" type="radio" /><input id="__tabbed_7_6" name="__tabbed_7" type="radio" /><input id="__tabbed_7_7" name="__tabbed_7" type="radio" /><input id="__tabbed_7_8" name="__tabbed_7" type="radio" /><div class="tabbed-labels"><label for="__tabbed_7_1">Java</label><label for="__tabbed_7_2">C++</label><label for="__tabbed_7_3">Python</label><label for="__tabbed_7_4">Go</label><label for="__tabbed_7_5">JavaScript</label><label for="__tabbed_7_6">TypeScript</label><label for="__tabbed_7_7">C</label><label for="__tabbed_7_8">C#</label></div>
|
|||
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|
|||
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<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">my_list.java</span><pre><span></span><code><a id="__codelineno-48-1" name="__codelineno-48-1" href="#__codelineno-48-1"></a><span class="cm">/* 列表类简易实现 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-2" name="__codelineno-48-2" href="#__codelineno-48-2"></a><span class="kd">class</span> <span class="nc">MyList</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-3" name="__codelineno-48-3" href="#__codelineno-48-3"></a><span class="w"> </span><span class="kd">private</span><span class="w"> </span><span class="kt">int</span><span class="o">[]</span><span class="w"> </span><span class="n">nums</span><span class="p">;</span><span class="w"> </span><span class="c1">// 数组(存储列表元素)</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-4" name="__codelineno-48-4" href="#__codelineno-48-4"></a><span class="w"> </span><span class="kd">private</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">capacity</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">10</span><span class="p">;</span><span class="w"> </span><span class="c1">// 列表容量</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-5" name="__codelineno-48-5" href="#__codelineno-48-5"></a><span class="w"> </span><span class="kd">private</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">size</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="c1">// 列表长度(即当前元素数量)</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-6" name="__codelineno-48-6" href="#__codelineno-48-6"></a><span class="w"> </span><span class="kd">private</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">extendRatio</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">2</span><span class="p">;</span><span class="w"> </span><span class="c1">// 每次列表扩容的倍数</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-7" name="__codelineno-48-7" href="#__codelineno-48-7"></a>
|
|||
|
<a id="__codelineno-48-8" name="__codelineno-48-8" href="#__codelineno-48-8"></a><span class="w"> </span><span class="cm">/* 构造函数 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-9" name="__codelineno-48-9" href="#__codelineno-48-9"></a><span class="w"> </span><span class="kd">public</span><span class="w"> </span><span class="nf">MyList</span><span class="p">()</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-10" name="__codelineno-48-10" href="#__codelineno-48-10"></a><span class="w"> </span><span class="n">nums</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">new</span><span class="w"> </span><span class="kt">int</span><span class="o">[</span><span class="n">capacity</span><span class="o">]</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-11" name="__codelineno-48-11" href="#__codelineno-48-11"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-12" name="__codelineno-48-12" href="#__codelineno-48-12"></a>
|
|||
|
<a id="__codelineno-48-13" name="__codelineno-48-13" href="#__codelineno-48-13"></a><span class="w"> </span><span class="cm">/* 获取列表长度(即当前元素数量)*/</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-14" name="__codelineno-48-14" href="#__codelineno-48-14"></a><span class="w"> </span><span class="kd">public</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="nf">size</span><span class="p">()</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-15" name="__codelineno-48-15" href="#__codelineno-48-15"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">size</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-16" name="__codelineno-48-16" href="#__codelineno-48-16"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-17" name="__codelineno-48-17" href="#__codelineno-48-17"></a>
|
|||
|
<a id="__codelineno-48-18" name="__codelineno-48-18" href="#__codelineno-48-18"></a><span class="w"> </span><span class="cm">/* 获取列表容量 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-19" name="__codelineno-48-19" href="#__codelineno-48-19"></a><span class="w"> </span><span class="kd">public</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="nf">capacity</span><span class="p">()</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-20" name="__codelineno-48-20" href="#__codelineno-48-20"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">capacity</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-21" name="__codelineno-48-21" href="#__codelineno-48-21"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-22" name="__codelineno-48-22" href="#__codelineno-48-22"></a>
|
|||
|
<a id="__codelineno-48-23" name="__codelineno-48-23" href="#__codelineno-48-23"></a><span class="w"> </span><span class="cm">/* 访问元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-24" name="__codelineno-48-24" href="#__codelineno-48-24"></a><span class="w"> </span><span class="kd">public</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="nf">get</span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">index</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-25" name="__codelineno-48-25" href="#__codelineno-48-25"></a><span class="w"> </span><span class="c1">// 索引如果越界则抛出异常,下同</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-26" name="__codelineno-48-26" href="#__codelineno-48-26"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">index</span><span class="w"> </span><span class="o">>=</span><span class="w"> </span><span class="n">size</span><span class="p">)</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-27" name="__codelineno-48-27" href="#__codelineno-48-27"></a><span class="w"> </span><span class="k">throw</span><span class="w"> </span><span class="k">new</span><span class="w"> </span><span class="n">IndexOutOfBoundsException</span><span class="p">(</span><span class="s">"索引越界"</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-28" name="__codelineno-48-28" href="#__codelineno-48-28"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">nums</span><span class="o">[</span><span class="n">index</span><span class="o">]</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-29" name="__codelineno-48-29" href="#__codelineno-48-29"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-30" name="__codelineno-48-30" href="#__codelineno-48-30"></a>
|
|||
|
<a id="__codelineno-48-31" name="__codelineno-48-31" href="#__codelineno-48-31"></a><span class="w"> </span><span class="cm">/* 更新元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-32" name="__codelineno-48-32" href="#__codelineno-48-32"></a><span class="w"> </span><span class="kd">public</span><span class="w"> </span><span class="kt">void</span><span class="w"> </span><span class="nf">set</span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">index</span><span class="p">,</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">num</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-33" name="__codelineno-48-33" href="#__codelineno-48-33"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">index</span><span class="w"> </span><span class="o">>=</span><span class="w"> </span><span class="n">size</span><span class="p">)</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-34" name="__codelineno-48-34" href="#__codelineno-48-34"></a><span class="w"> </span><span class="k">throw</span><span class="w"> </span><span class="k">new</span><span class="w"> </span><span class="n">IndexOutOfBoundsException</span><span class="p">(</span><span class="s">"索引越界"</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-35" name="__codelineno-48-35" href="#__codelineno-48-35"></a><span class="w"> </span><span class="n">nums</span><span class="o">[</span><span class="n">index</span><span class="o">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">num</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-36" name="__codelineno-48-36" href="#__codelineno-48-36"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-37" name="__codelineno-48-37" href="#__codelineno-48-37"></a>
|
|||
|
<a id="__codelineno-48-38" name="__codelineno-48-38" href="#__codelineno-48-38"></a><span class="w"> </span><span class="cm">/* 尾部添加元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-39" name="__codelineno-48-39" href="#__codelineno-48-39"></a><span class="w"> </span><span class="kd">public</span><span class="w"> </span><span class="kt">void</span><span class="w"> </span><span class="nf">add</span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">num</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-40" name="__codelineno-48-40" href="#__codelineno-48-40"></a><span class="w"> </span><span class="c1">// 元素数量超出容量时,触发扩容机制</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-41" name="__codelineno-48-41" href="#__codelineno-48-41"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">size</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="n">capacity</span><span class="p">())</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-42" name="__codelineno-48-42" href="#__codelineno-48-42"></a><span class="w"> </span><span class="n">extendCapacity</span><span class="p">();</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-43" name="__codelineno-48-43" href="#__codelineno-48-43"></a><span class="w"> </span><span class="n">nums</span><span class="o">[</span><span class="n">size</span><span class="o">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">num</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-44" name="__codelineno-48-44" href="#__codelineno-48-44"></a><span class="w"> </span><span class="c1">// 更新元素数量</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-45" name="__codelineno-48-45" href="#__codelineno-48-45"></a><span class="w"> </span><span class="n">size</span><span class="o">++</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-46" name="__codelineno-48-46" href="#__codelineno-48-46"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-47" name="__codelineno-48-47" href="#__codelineno-48-47"></a>
|
|||
|
<a id="__codelineno-48-48" name="__codelineno-48-48" href="#__codelineno-48-48"></a><span class="w"> </span><span class="cm">/* 中间插入元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-49" name="__codelineno-48-49" href="#__codelineno-48-49"></a><span class="w"> </span><span class="kd">public</span><span class="w"> </span><span class="kt">void</span><span class="w"> </span><span class="nf">insert</span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">index</span><span class="p">,</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">num</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-50" name="__codelineno-48-50" href="#__codelineno-48-50"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">index</span><span class="w"> </span><span class="o">>=</span><span class="w"> </span><span class="n">size</span><span class="p">)</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-51" name="__codelineno-48-51" href="#__codelineno-48-51"></a><span class="w"> </span><span class="k">throw</span><span class="w"> </span><span class="k">new</span><span class="w"> </span><span class="n">IndexOutOfBoundsException</span><span class="p">(</span><span class="s">"索引越界"</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-52" name="__codelineno-48-52" href="#__codelineno-48-52"></a><span class="w"> </span><span class="c1">// 元素数量超出容量时,触发扩容机制</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-53" name="__codelineno-48-53" href="#__codelineno-48-53"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">size</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="n">capacity</span><span class="p">())</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-54" name="__codelineno-48-54" href="#__codelineno-48-54"></a><span class="w"> </span><span class="n">extendCapacity</span><span class="p">();</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-55" name="__codelineno-48-55" href="#__codelineno-48-55"></a><span class="w"> </span><span class="c1">// 将索引 index 以及之后的元素都向后移动一位</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-56" name="__codelineno-48-56" href="#__codelineno-48-56"></a><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">j</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">size</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span><span class="w"> </span><span class="n">j</span><span class="w"> </span><span class="o">>=</span><span class="w"> </span><span class="n">index</span><span class="p">;</span><span class="w"> </span><span class="n">j</span><span class="o">--</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-57" name="__codelineno-48-57" href="#__codelineno-48-57"></a><span class="w"> </span><span class="n">nums</span><span class="o">[</span><span class="n">j</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="mi">1</span><span class="o">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">nums</span><span class="o">[</span><span class="n">j</span><span class="o">]</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-58" name="__codelineno-48-58" href="#__codelineno-48-58"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-59" name="__codelineno-48-59" href="#__codelineno-48-59"></a><span class="w"> </span><span class="n">nums</span><span class="o">[</span><span class="n">index</span><span class="o">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">num</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-60" name="__codelineno-48-60" href="#__codelineno-48-60"></a><span class="w"> </span><span class="c1">// 更新元素数量</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-61" name="__codelineno-48-61" href="#__codelineno-48-61"></a><span class="w"> </span><span class="n">size</span><span class="o">++</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-62" name="__codelineno-48-62" href="#__codelineno-48-62"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-63" name="__codelineno-48-63" href="#__codelineno-48-63"></a>
|
|||
|
<a id="__codelineno-48-64" name="__codelineno-48-64" href="#__codelineno-48-64"></a><span class="w"> </span><span class="cm">/* 删除元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-65" name="__codelineno-48-65" href="#__codelineno-48-65"></a><span class="w"> </span><span class="kd">public</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="nf">remove</span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">index</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-66" name="__codelineno-48-66" href="#__codelineno-48-66"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">index</span><span class="w"> </span><span class="o">>=</span><span class="w"> </span><span class="n">size</span><span class="p">)</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-67" name="__codelineno-48-67" href="#__codelineno-48-67"></a><span class="w"> </span><span class="k">throw</span><span class="w"> </span><span class="k">new</span><span class="w"> </span><span class="n">IndexOutOfBoundsException</span><span class="p">(</span><span class="s">"索引越界"</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-68" name="__codelineno-48-68" href="#__codelineno-48-68"></a><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">num</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">nums</span><span class="o">[</span><span class="n">index</span><span class="o">]</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-69" name="__codelineno-48-69" href="#__codelineno-48-69"></a><span class="w"> </span><span class="c1">// 将索引 index 之后的元素都向前移动一位</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-70" name="__codelineno-48-70" href="#__codelineno-48-70"></a><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">j</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">index</span><span class="p">;</span><span class="w"> </span><span class="n">j</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">size</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span><span class="w"> </span><span class="n">j</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-71" name="__codelineno-48-71" href="#__codelineno-48-71"></a><span class="w"> </span><span class="n">nums</span><span class="o">[</span><span class="n">j</span><span class="o">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">nums</span><span class="o">[</span><span class="n">j</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="mi">1</span><span class="o">]</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-72" name="__codelineno-48-72" href="#__codelineno-48-72"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-73" name="__codelineno-48-73" href="#__codelineno-48-73"></a><span class="w"> </span><span class="c1">// 更新元素数量</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-74" name="__codelineno-48-74" href="#__codelineno-48-74"></a><span class="w"> </span><span class="n">size</span><span class="o">--</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-75" name="__codelineno-48-75" href="#__codelineno-48-75"></a><span class="w"> </span><span class="c1">// 返回被删除元素</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-76" name="__codelineno-48-76" href="#__codelineno-48-76"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">num</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-77" name="__codelineno-48-77" href="#__codelineno-48-77"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-78" name="__codelineno-48-78" href="#__codelineno-48-78"></a>
|
|||
|
<a id="__codelineno-48-79" name="__codelineno-48-79" href="#__codelineno-48-79"></a><span class="w"> </span><span class="cm">/* 列表扩容 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-80" name="__codelineno-48-80" href="#__codelineno-48-80"></a><span class="w"> </span><span class="kd">public</span><span class="w"> </span><span class="kt">void</span><span class="w"> </span><span class="nf">extendCapacity</span><span class="p">()</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-81" name="__codelineno-48-81" href="#__codelineno-48-81"></a><span class="w"> </span><span class="c1">// 新建一个长度为 size 的数组,并将原数组拷贝到新数组</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-82" name="__codelineno-48-82" href="#__codelineno-48-82"></a><span class="w"> </span><span class="n">nums</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">Arrays</span><span class="p">.</span><span class="na">copyOf</span><span class="p">(</span><span class="n">nums</span><span class="p">,</span><span class="w"> </span><span class="n">capacity</span><span class="p">()</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">extendRatio</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-83" name="__codelineno-48-83" href="#__codelineno-48-83"></a><span class="w"> </span><span class="c1">// 更新列表容量</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-84" name="__codelineno-48-84" href="#__codelineno-48-84"></a><span class="w"> </span><span class="n">capacity</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">nums</span><span class="p">.</span><span class="na">length</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-85" name="__codelineno-48-85" href="#__codelineno-48-85"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-48-86" name="__codelineno-48-86" href="#__codelineno-48-86"></a><span class="p">}</span><span class="w"></span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">my_list.cpp</span><pre><span></span><code><a id="__codelineno-49-1" name="__codelineno-49-1" href="#__codelineno-49-1"></a><span class="cm">/* 列表类简易实现 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-2" name="__codelineno-49-2" href="#__codelineno-49-2"></a><span class="k">class</span><span class="w"> </span><span class="nc">MyList</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-3" name="__codelineno-49-3" href="#__codelineno-49-3"></a><span class="k">private</span><span class="o">:</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-4" name="__codelineno-49-4" href="#__codelineno-49-4"></a><span class="w"> </span><span class="kt">int</span><span class="o">*</span><span class="w"> </span><span class="n">nums</span><span class="p">;</span><span class="w"> </span><span class="c1">// 数组(存储列表元素)</span>
|
|||
|
<a id="__codelineno-49-5" name="__codelineno-49-5" href="#__codelineno-49-5"></a><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">numsCapacity</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">10</span><span class="p">;</span><span class="w"> </span><span class="c1">// 列表容量</span>
|
|||
|
<a id="__codelineno-49-6" name="__codelineno-49-6" href="#__codelineno-49-6"></a><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">numsSize</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="c1">// 列表长度(即当前元素数量)</span>
|
|||
|
<a id="__codelineno-49-7" name="__codelineno-49-7" href="#__codelineno-49-7"></a><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">extendRatio</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">2</span><span class="p">;</span><span class="w"> </span><span class="c1">// 每次列表扩容的倍数</span>
|
|||
|
<a id="__codelineno-49-8" name="__codelineno-49-8" href="#__codelineno-49-8"></a>
|
|||
|
<a id="__codelineno-49-9" name="__codelineno-49-9" href="#__codelineno-49-9"></a><span class="k">public</span><span class="o">:</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-10" name="__codelineno-49-10" href="#__codelineno-49-10"></a><span class="w"> </span><span class="cm">/* 构造函数 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-11" name="__codelineno-49-11" href="#__codelineno-49-11"></a><span class="w"> </span><span class="n">MyList</span><span class="p">()</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-12" name="__codelineno-49-12" href="#__codelineno-49-12"></a><span class="w"> </span><span class="n">nums</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">new</span><span class="w"> </span><span class="kt">int</span><span class="p">[</span><span class="n">numsCapacity</span><span class="p">];</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-13" name="__codelineno-49-13" href="#__codelineno-49-13"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-14" name="__codelineno-49-14" href="#__codelineno-49-14"></a>
|
|||
|
<a id="__codelineno-49-15" name="__codelineno-49-15" href="#__codelineno-49-15"></a><span class="w"> </span><span class="cm">/* 获取列表长度(即当前元素数量)*/</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-16" name="__codelineno-49-16" href="#__codelineno-49-16"></a><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">size</span><span class="p">()</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-17" name="__codelineno-49-17" href="#__codelineno-49-17"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">numsSize</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-18" name="__codelineno-49-18" href="#__codelineno-49-18"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-19" name="__codelineno-49-19" href="#__codelineno-49-19"></a>
|
|||
|
<a id="__codelineno-49-20" name="__codelineno-49-20" href="#__codelineno-49-20"></a><span class="w"> </span><span class="cm">/* 获取列表容量 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-21" name="__codelineno-49-21" href="#__codelineno-49-21"></a><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">capacity</span><span class="p">()</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-22" name="__codelineno-49-22" href="#__codelineno-49-22"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">numsCapacity</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-23" name="__codelineno-49-23" href="#__codelineno-49-23"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-24" name="__codelineno-49-24" href="#__codelineno-49-24"></a>
|
|||
|
<a id="__codelineno-49-25" name="__codelineno-49-25" href="#__codelineno-49-25"></a><span class="w"> </span><span class="cm">/* 访问元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-26" name="__codelineno-49-26" href="#__codelineno-49-26"></a><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">get</span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">index</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-27" name="__codelineno-49-27" href="#__codelineno-49-27"></a><span class="w"> </span><span class="c1">// 索引如果越界则抛出异常,下同</span>
|
|||
|
<a id="__codelineno-49-28" name="__codelineno-49-28" href="#__codelineno-49-28"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">index</span><span class="w"> </span><span class="o">>=</span><span class="w"> </span><span class="n">size</span><span class="p">())</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-29" name="__codelineno-49-29" href="#__codelineno-49-29"></a><span class="w"> </span><span class="k">throw</span><span class="w"> </span><span class="n">out_of_range</span><span class="p">(</span><span class="s">"索引越界"</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-30" name="__codelineno-49-30" href="#__codelineno-49-30"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">nums</span><span class="p">[</span><span class="n">index</span><span class="p">];</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-31" name="__codelineno-49-31" href="#__codelineno-49-31"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-32" name="__codelineno-49-32" href="#__codelineno-49-32"></a>
|
|||
|
<a id="__codelineno-49-33" name="__codelineno-49-33" href="#__codelineno-49-33"></a><span class="w"> </span><span class="cm">/* 更新元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-34" name="__codelineno-49-34" href="#__codelineno-49-34"></a><span class="w"> </span><span class="kt">void</span><span class="w"> </span><span class="n">set</span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">index</span><span class="p">,</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">num</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-35" name="__codelineno-49-35" href="#__codelineno-49-35"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">index</span><span class="w"> </span><span class="o">>=</span><span class="w"> </span><span class="n">size</span><span class="p">())</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-36" name="__codelineno-49-36" href="#__codelineno-49-36"></a><span class="w"> </span><span class="k">throw</span><span class="w"> </span><span class="n">out_of_range</span><span class="p">(</span><span class="s">"索引越界"</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-37" name="__codelineno-49-37" href="#__codelineno-49-37"></a><span class="w"> </span><span class="n">nums</span><span class="p">[</span><span class="n">index</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">num</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-38" name="__codelineno-49-38" href="#__codelineno-49-38"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-39" name="__codelineno-49-39" href="#__codelineno-49-39"></a>
|
|||
|
<a id="__codelineno-49-40" name="__codelineno-49-40" href="#__codelineno-49-40"></a><span class="w"> </span><span class="cm">/* 尾部添加元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-41" name="__codelineno-49-41" href="#__codelineno-49-41"></a><span class="w"> </span><span class="kt">void</span><span class="w"> </span><span class="n">add</span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">num</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-42" name="__codelineno-49-42" href="#__codelineno-49-42"></a><span class="w"> </span><span class="c1">// 元素数量超出容量时,触发扩容机制</span>
|
|||
|
<a id="__codelineno-49-43" name="__codelineno-49-43" href="#__codelineno-49-43"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">size</span><span class="p">()</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="n">capacity</span><span class="p">())</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-44" name="__codelineno-49-44" href="#__codelineno-49-44"></a><span class="w"> </span><span class="n">extendCapacity</span><span class="p">();</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-45" name="__codelineno-49-45" href="#__codelineno-49-45"></a><span class="w"> </span><span class="n">nums</span><span class="p">[</span><span class="n">size</span><span class="p">()]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">num</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-46" name="__codelineno-49-46" href="#__codelineno-49-46"></a><span class="w"> </span><span class="c1">// 更新元素数量</span>
|
|||
|
<a id="__codelineno-49-47" name="__codelineno-49-47" href="#__codelineno-49-47"></a><span class="w"> </span><span class="n">numsSize</span><span class="o">++</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-48" name="__codelineno-49-48" href="#__codelineno-49-48"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-49" name="__codelineno-49-49" href="#__codelineno-49-49"></a>
|
|||
|
<a id="__codelineno-49-50" name="__codelineno-49-50" href="#__codelineno-49-50"></a><span class="w"> </span><span class="cm">/* 中间插入元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-51" name="__codelineno-49-51" href="#__codelineno-49-51"></a><span class="w"> </span><span class="kt">void</span><span class="w"> </span><span class="n">insert</span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">index</span><span class="p">,</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">num</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-52" name="__codelineno-49-52" href="#__codelineno-49-52"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">index</span><span class="w"> </span><span class="o">>=</span><span class="w"> </span><span class="n">size</span><span class="p">())</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-53" name="__codelineno-49-53" href="#__codelineno-49-53"></a><span class="w"> </span><span class="k">throw</span><span class="w"> </span><span class="n">out_of_range</span><span class="p">(</span><span class="s">"索引越界"</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-54" name="__codelineno-49-54" href="#__codelineno-49-54"></a><span class="w"> </span><span class="c1">// 元素数量超出容量时,触发扩容机制</span>
|
|||
|
<a id="__codelineno-49-55" name="__codelineno-49-55" href="#__codelineno-49-55"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">size</span><span class="p">()</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="n">capacity</span><span class="p">())</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-56" name="__codelineno-49-56" href="#__codelineno-49-56"></a><span class="w"> </span><span class="n">extendCapacity</span><span class="p">();</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-57" name="__codelineno-49-57" href="#__codelineno-49-57"></a><span class="w"> </span><span class="c1">// 索引 i 以及之后的元素都向后移动一位</span>
|
|||
|
<a id="__codelineno-49-58" name="__codelineno-49-58" href="#__codelineno-49-58"></a><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">j</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">size</span><span class="p">()</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span><span class="w"> </span><span class="n">j</span><span class="w"> </span><span class="o">>=</span><span class="w"> </span><span class="n">index</span><span class="p">;</span><span class="w"> </span><span class="n">j</span><span class="o">--</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-59" name="__codelineno-49-59" href="#__codelineno-49-59"></a><span class="w"> </span><span class="n">nums</span><span class="p">[</span><span class="n">j</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="mi">1</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">nums</span><span class="p">[</span><span class="n">j</span><span class="p">];</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-60" name="__codelineno-49-60" href="#__codelineno-49-60"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-61" name="__codelineno-49-61" href="#__codelineno-49-61"></a><span class="w"> </span><span class="n">nums</span><span class="p">[</span><span class="n">index</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">num</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-62" name="__codelineno-49-62" href="#__codelineno-49-62"></a><span class="w"> </span><span class="c1">// 更新元素数量</span>
|
|||
|
<a id="__codelineno-49-63" name="__codelineno-49-63" href="#__codelineno-49-63"></a><span class="w"> </span><span class="n">numsSize</span><span class="o">++</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-64" name="__codelineno-49-64" href="#__codelineno-49-64"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-65" name="__codelineno-49-65" href="#__codelineno-49-65"></a>
|
|||
|
<a id="__codelineno-49-66" name="__codelineno-49-66" href="#__codelineno-49-66"></a><span class="w"> </span><span class="cm">/* 删除元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-67" name="__codelineno-49-67" href="#__codelineno-49-67"></a><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">remove</span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">index</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-68" name="__codelineno-49-68" href="#__codelineno-49-68"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">index</span><span class="w"> </span><span class="o">>=</span><span class="w"> </span><span class="n">size</span><span class="p">())</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-69" name="__codelineno-49-69" href="#__codelineno-49-69"></a><span class="w"> </span><span class="k">throw</span><span class="w"> </span><span class="n">out_of_range</span><span class="p">(</span><span class="s">"索引越界"</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-70" name="__codelineno-49-70" href="#__codelineno-49-70"></a><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">num</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">nums</span><span class="p">[</span><span class="n">index</span><span class="p">];</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-71" name="__codelineno-49-71" href="#__codelineno-49-71"></a><span class="w"> </span><span class="c1">// 索引 i 之后的元素都向前移动一位</span>
|
|||
|
<a id="__codelineno-49-72" name="__codelineno-49-72" href="#__codelineno-49-72"></a><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">j</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">index</span><span class="p">;</span><span class="w"> </span><span class="n">j</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">size</span><span class="p">()</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span><span class="w"> </span><span class="n">j</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-73" name="__codelineno-49-73" href="#__codelineno-49-73"></a><span class="w"> </span><span class="n">nums</span><span class="p">[</span><span class="n">j</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">nums</span><span class="p">[</span><span class="n">j</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="mi">1</span><span class="p">];</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-74" name="__codelineno-49-74" href="#__codelineno-49-74"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-75" name="__codelineno-49-75" href="#__codelineno-49-75"></a><span class="w"> </span><span class="c1">// 更新元素数量</span>
|
|||
|
<a id="__codelineno-49-76" name="__codelineno-49-76" href="#__codelineno-49-76"></a><span class="w"> </span><span class="n">numsSize</span><span class="o">--</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-77" name="__codelineno-49-77" href="#__codelineno-49-77"></a><span class="w"> </span><span class="c1">// 返回被删除元素</span>
|
|||
|
<a id="__codelineno-49-78" name="__codelineno-49-78" href="#__codelineno-49-78"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">num</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-79" name="__codelineno-49-79" href="#__codelineno-49-79"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-80" name="__codelineno-49-80" href="#__codelineno-49-80"></a>
|
|||
|
<a id="__codelineno-49-81" name="__codelineno-49-81" href="#__codelineno-49-81"></a><span class="w"> </span><span class="cm">/* 列表扩容 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-82" name="__codelineno-49-82" href="#__codelineno-49-82"></a><span class="w"> </span><span class="kt">void</span><span class="w"> </span><span class="n">extendCapacity</span><span class="p">()</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-83" name="__codelineno-49-83" href="#__codelineno-49-83"></a><span class="w"> </span><span class="c1">// 新建一个长度为 size * extendRatio 的数组,并将原数组拷贝到新数组</span>
|
|||
|
<a id="__codelineno-49-84" name="__codelineno-49-84" href="#__codelineno-49-84"></a><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">newCapacity</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">capacity</span><span class="p">()</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">extendRatio</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-85" name="__codelineno-49-85" href="#__codelineno-49-85"></a><span class="w"> </span><span class="kt">int</span><span class="o">*</span><span class="w"> </span><span class="n">extend</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">new</span><span class="w"> </span><span class="kt">int</span><span class="p">[</span><span class="n">newCapacity</span><span class="p">];</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-86" name="__codelineno-49-86" href="#__codelineno-49-86"></a><span class="w"> </span><span class="c1">// 将原数组中的所有元素复制到新数组</span>
|
|||
|
<a id="__codelineno-49-87" name="__codelineno-49-87" href="#__codelineno-49-87"></a><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">i</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">i</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">size</span><span class="p">();</span><span class="w"> </span><span class="n">i</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-88" name="__codelineno-49-88" href="#__codelineno-49-88"></a><span class="w"> </span><span class="n">extend</span><span class="p">[</span><span class="n">i</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">nums</span><span class="p">[</span><span class="n">i</span><span class="p">];</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-89" name="__codelineno-49-89" href="#__codelineno-49-89"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-90" name="__codelineno-49-90" href="#__codelineno-49-90"></a><span class="w"> </span><span class="kt">int</span><span class="o">*</span><span class="w"> </span><span class="n">temp</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">nums</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-91" name="__codelineno-49-91" href="#__codelineno-49-91"></a><span class="w"> </span><span class="n">nums</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">extend</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-92" name="__codelineno-49-92" href="#__codelineno-49-92"></a><span class="w"> </span><span class="k">delete</span><span class="p">[]</span><span class="w"> </span><span class="n">temp</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-93" name="__codelineno-49-93" href="#__codelineno-49-93"></a><span class="w"> </span><span class="n">numsCapacity</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">newCapacity</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-94" name="__codelineno-49-94" href="#__codelineno-49-94"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-49-95" name="__codelineno-49-95" href="#__codelineno-49-95"></a><span class="p">};</span><span class="w"></span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">my_list.py</span><pre><span></span><code><a id="__codelineno-50-1" name="__codelineno-50-1" href="#__codelineno-50-1"></a><span class="sd">""" 列表类简易实现 """</span>
|
|||
|
<a id="__codelineno-50-2" name="__codelineno-50-2" href="#__codelineno-50-2"></a><span class="k">class</span> <span class="nc">MyList</span><span class="p">:</span>
|
|||
|
<a id="__codelineno-50-3" name="__codelineno-50-3" href="#__codelineno-50-3"></a> <span class="sd">""" 构造函数 """</span>
|
|||
|
<a id="__codelineno-50-4" name="__codelineno-50-4" href="#__codelineno-50-4"></a> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
|
|||
|
<a id="__codelineno-50-5" name="__codelineno-50-5" href="#__codelineno-50-5"></a> <span class="bp">self</span><span class="o">.</span><span class="n">__capacity</span> <span class="o">=</span> <span class="mi">10</span> <span class="c1"># 列表容量</span>
|
|||
|
<a id="__codelineno-50-6" name="__codelineno-50-6" href="#__codelineno-50-6"></a> <span class="bp">self</span><span class="o">.</span><span class="n">__nums</span> <span class="o">=</span> <span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">__capacity</span> <span class="c1"># 数组(存储列表元素)</span>
|
|||
|
<a id="__codelineno-50-7" name="__codelineno-50-7" href="#__codelineno-50-7"></a> <span class="bp">self</span><span class="o">.</span><span class="n">__size</span> <span class="o">=</span> <span class="mi">0</span> <span class="c1"># 列表长度(即当前元素数量)</span>
|
|||
|
<a id="__codelineno-50-8" name="__codelineno-50-8" href="#__codelineno-50-8"></a> <span class="bp">self</span><span class="o">.</span><span class="n">__extend_ratio</span> <span class="o">=</span> <span class="mi">2</span> <span class="c1"># 每次列表扩容的倍数</span>
|
|||
|
<a id="__codelineno-50-9" name="__codelineno-50-9" href="#__codelineno-50-9"></a>
|
|||
|
<a id="__codelineno-50-10" name="__codelineno-50-10" href="#__codelineno-50-10"></a> <span class="sd">""" 获取列表长度(即当前元素数量) """</span>
|
|||
|
<a id="__codelineno-50-11" name="__codelineno-50-11" href="#__codelineno-50-11"></a> <span class="k">def</span> <span class="nf">size</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
|
|||
|
<a id="__codelineno-50-12" name="__codelineno-50-12" href="#__codelineno-50-12"></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">__size</span>
|
|||
|
<a id="__codelineno-50-13" name="__codelineno-50-13" href="#__codelineno-50-13"></a>
|
|||
|
<a id="__codelineno-50-14" name="__codelineno-50-14" href="#__codelineno-50-14"></a> <span class="sd">""" 获取列表容量 """</span>
|
|||
|
<a id="__codelineno-50-15" name="__codelineno-50-15" href="#__codelineno-50-15"></a> <span class="k">def</span> <span class="nf">capacity</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
|
|||
|
<a id="__codelineno-50-16" name="__codelineno-50-16" href="#__codelineno-50-16"></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">__capacity</span>
|
|||
|
<a id="__codelineno-50-17" name="__codelineno-50-17" href="#__codelineno-50-17"></a>
|
|||
|
<a id="__codelineno-50-18" name="__codelineno-50-18" href="#__codelineno-50-18"></a> <span class="sd">""" 访问元素 """</span>
|
|||
|
<a id="__codelineno-50-19" name="__codelineno-50-19" href="#__codelineno-50-19"></a> <span class="k">def</span> <span class="nf">get</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">index</span><span class="p">):</span>
|
|||
|
<a id="__codelineno-50-20" name="__codelineno-50-20" href="#__codelineno-50-20"></a> <span class="c1"># 索引如果越界则抛出异常,下同</span>
|
|||
|
<a id="__codelineno-50-21" name="__codelineno-50-21" href="#__codelineno-50-21"></a> <span class="k">assert</span> <span class="n">index</span> <span class="o"><</span> <span class="bp">self</span><span class="o">.</span><span class="n">__size</span><span class="p">,</span> <span class="s2">"索引越界"</span>
|
|||
|
<a id="__codelineno-50-22" name="__codelineno-50-22" href="#__codelineno-50-22"></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">__nums</span><span class="p">[</span><span class="n">index</span><span class="p">]</span>
|
|||
|
<a id="__codelineno-50-23" name="__codelineno-50-23" href="#__codelineno-50-23"></a>
|
|||
|
<a id="__codelineno-50-24" name="__codelineno-50-24" href="#__codelineno-50-24"></a> <span class="sd">""" 更新元素 """</span>
|
|||
|
<a id="__codelineno-50-25" name="__codelineno-50-25" href="#__codelineno-50-25"></a> <span class="k">def</span> <span class="nf">set</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">num</span><span class="p">,</span> <span class="n">index</span><span class="p">):</span>
|
|||
|
<a id="__codelineno-50-26" name="__codelineno-50-26" href="#__codelineno-50-26"></a> <span class="k">assert</span> <span class="n">index</span> <span class="o"><</span> <span class="bp">self</span><span class="o">.</span><span class="n">__size</span><span class="p">,</span> <span class="s2">"索引越界"</span>
|
|||
|
<a id="__codelineno-50-27" name="__codelineno-50-27" href="#__codelineno-50-27"></a> <span class="bp">self</span><span class="o">.</span><span class="n">__nums</span><span class="p">[</span><span class="n">index</span><span class="p">]</span> <span class="o">=</span> <span class="n">num</span>
|
|||
|
<a id="__codelineno-50-28" name="__codelineno-50-28" href="#__codelineno-50-28"></a>
|
|||
|
<a id="__codelineno-50-29" name="__codelineno-50-29" href="#__codelineno-50-29"></a> <span class="sd">""" 中间插入(尾部添加)元素 """</span>
|
|||
|
<a id="__codelineno-50-30" name="__codelineno-50-30" href="#__codelineno-50-30"></a> <span class="k">def</span> <span class="nf">add</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">num</span><span class="p">,</span> <span class="n">index</span><span class="o">=-</span><span class="mi">1</span><span class="p">):</span>
|
|||
|
<a id="__codelineno-50-31" name="__codelineno-50-31" href="#__codelineno-50-31"></a> <span class="k">assert</span> <span class="n">index</span> <span class="o"><</span> <span class="bp">self</span><span class="o">.</span><span class="n">__size</span><span class="p">,</span> <span class="s2">"索引越界"</span>
|
|||
|
<a id="__codelineno-50-32" name="__codelineno-50-32" href="#__codelineno-50-32"></a> <span class="c1"># 若不指定索引 index ,则向数组尾部添加元素</span>
|
|||
|
<a id="__codelineno-50-33" name="__codelineno-50-33" href="#__codelineno-50-33"></a> <span class="k">if</span> <span class="n">index</span> <span class="o">==</span> <span class="o">-</span><span class="mi">1</span><span class="p">:</span>
|
|||
|
<a id="__codelineno-50-34" name="__codelineno-50-34" href="#__codelineno-50-34"></a> <span class="n">index</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">__size</span>
|
|||
|
<a id="__codelineno-50-35" name="__codelineno-50-35" href="#__codelineno-50-35"></a> <span class="c1"># 元素数量超出容量时,触发扩容机制</span>
|
|||
|
<a id="__codelineno-50-36" name="__codelineno-50-36" href="#__codelineno-50-36"></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">__size</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">capacity</span><span class="p">():</span>
|
|||
|
<a id="__codelineno-50-37" name="__codelineno-50-37" href="#__codelineno-50-37"></a> <span class="bp">self</span><span class="o">.</span><span class="n">extend_capacity</span><span class="p">()</span>
|
|||
|
<a id="__codelineno-50-38" name="__codelineno-50-38" href="#__codelineno-50-38"></a> <span class="c1"># 索引 i 以及之后的元素都向后移动一位</span>
|
|||
|
<a id="__codelineno-50-39" name="__codelineno-50-39" href="#__codelineno-50-39"></a> <span class="k">for</span> <span class="n">j</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">__size</span> <span class="o">-</span> <span class="mi">1</span><span class="p">,</span> <span class="n">index</span> <span class="o">-</span> <span class="mi">1</span><span class="p">,</span> <span class="o">-</span><span class="mi">1</span><span class="p">):</span>
|
|||
|
<a id="__codelineno-50-40" name="__codelineno-50-40" href="#__codelineno-50-40"></a> <span class="bp">self</span><span class="o">.</span><span class="n">__nums</span><span class="p">[</span><span class="n">j</span> <span class="o">+</span> <span class="mi">1</span><span class="p">]</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">__nums</span><span class="p">[</span><span class="n">j</span><span class="p">]</span>
|
|||
|
<a id="__codelineno-50-41" name="__codelineno-50-41" href="#__codelineno-50-41"></a> <span class="bp">self</span><span class="o">.</span><span class="n">__nums</span><span class="p">[</span><span class="n">index</span><span class="p">]</span> <span class="o">=</span> <span class="n">num</span>
|
|||
|
<a id="__codelineno-50-42" name="__codelineno-50-42" href="#__codelineno-50-42"></a> <span class="c1"># 更新元素数量</span>
|
|||
|
<a id="__codelineno-50-43" name="__codelineno-50-43" href="#__codelineno-50-43"></a> <span class="bp">self</span><span class="o">.</span><span class="n">__size</span> <span class="o">+=</span> <span class="mi">1</span>
|
|||
|
<a id="__codelineno-50-44" name="__codelineno-50-44" href="#__codelineno-50-44"></a>
|
|||
|
<a id="__codelineno-50-45" name="__codelineno-50-45" href="#__codelineno-50-45"></a> <span class="sd">""" 删除元素 """</span>
|
|||
|
<a id="__codelineno-50-46" name="__codelineno-50-46" href="#__codelineno-50-46"></a> <span class="k">def</span> <span class="nf">remove</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">index</span><span class="p">):</span>
|
|||
|
<a id="__codelineno-50-47" name="__codelineno-50-47" href="#__codelineno-50-47"></a> <span class="k">assert</span> <span class="n">index</span> <span class="o"><</span> <span class="bp">self</span><span class="o">.</span><span class="n">__size</span><span class="p">,</span> <span class="s2">"索引越界"</span>
|
|||
|
<a id="__codelineno-50-48" name="__codelineno-50-48" href="#__codelineno-50-48"></a> <span class="c1"># 索引 i 之后的元素都向前移动一位</span>
|
|||
|
<a id="__codelineno-50-49" name="__codelineno-50-49" href="#__codelineno-50-49"></a> <span class="k">for</span> <span class="n">j</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="n">index</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">__size</span> <span class="o">-</span> <span class="mi">1</span><span class="p">):</span>
|
|||
|
<a id="__codelineno-50-50" name="__codelineno-50-50" href="#__codelineno-50-50"></a> <span class="bp">self</span><span class="o">.</span><span class="n">__nums</span><span class="p">[</span><span class="n">j</span><span class="p">]</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">__nums</span><span class="p">[</span><span class="n">j</span> <span class="o">+</span> <span class="mi">1</span><span class="p">]</span>
|
|||
|
<a id="__codelineno-50-51" name="__codelineno-50-51" href="#__codelineno-50-51"></a> <span class="c1"># 更新元素数量</span>
|
|||
|
<a id="__codelineno-50-52" name="__codelineno-50-52" href="#__codelineno-50-52"></a> <span class="bp">self</span><span class="o">.</span><span class="n">__size</span> <span class="o">-=</span> <span class="mi">1</span>
|
|||
|
<a id="__codelineno-50-53" name="__codelineno-50-53" href="#__codelineno-50-53"></a>
|
|||
|
<a id="__codelineno-50-54" name="__codelineno-50-54" href="#__codelineno-50-54"></a> <span class="sd">""" 列表扩容 """</span>
|
|||
|
<a id="__codelineno-50-55" name="__codelineno-50-55" href="#__codelineno-50-55"></a> <span class="k">def</span> <span class="nf">extend_capacity</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
|
|||
|
<a id="__codelineno-50-56" name="__codelineno-50-56" href="#__codelineno-50-56"></a> <span class="c1"># 新建一个长度为 self.__size 的数组,并将原数组拷贝到新数组</span>
|
|||
|
<a id="__codelineno-50-57" name="__codelineno-50-57" href="#__codelineno-50-57"></a> <span class="bp">self</span><span class="o">.</span><span class="n">__nums</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">__nums</span> <span class="o">+</span> <span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">capacity</span><span class="p">()</span> <span class="o">*</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">__extend_ratio</span> <span class="o">-</span> <span class="mi">1</span><span class="p">)</span>
|
|||
|
<a id="__codelineno-50-58" name="__codelineno-50-58" href="#__codelineno-50-58"></a> <span class="c1"># 更新列表容量</span>
|
|||
|
<a id="__codelineno-50-59" name="__codelineno-50-59" href="#__codelineno-50-59"></a> <span class="bp">self</span><span class="o">.</span><span class="n">__capacity</span> <span class="o">=</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">__nums</span><span class="p">)</span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">my_list.go</span><pre><span></span><code><a id="__codelineno-51-1" name="__codelineno-51-1" href="#__codelineno-51-1"></a>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">my_list.js</span><pre><span></span><code><a id="__codelineno-52-1" name="__codelineno-52-1" href="#__codelineno-52-1"></a><span class="cm">/* 列表类简易实现 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-2" name="__codelineno-52-2" href="#__codelineno-52-2"></a><span class="kd">class</span><span class="w"> </span><span class="nx">MyList</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-3" name="__codelineno-52-3" href="#__codelineno-52-3"></a><span class="w"> </span><span class="err">#</span><span class="nx">nums</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="ow">new</span><span class="w"> </span><span class="nb">Array</span><span class="p">();</span><span class="w"> </span><span class="c1">// 数组(存储列表元素)</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-4" name="__codelineno-52-4" href="#__codelineno-52-4"></a><span class="w"> </span><span class="err">#</span><span class="nx">capacity</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">10</span><span class="p">;</span><span class="w"> </span><span class="c1">// 列表容量</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-5" name="__codelineno-52-5" href="#__codelineno-52-5"></a><span class="w"> </span><span class="err">#</span><span class="nx">size</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">0</span><span class="p">;</span><span class="w"> </span><span class="c1">// 列表长度(即当前元素数量)</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-6" name="__codelineno-52-6" href="#__codelineno-52-6"></a><span class="w"> </span><span class="err">#</span><span class="nx">extendRatio</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">2</span><span class="p">;</span><span class="w"> </span><span class="c1">// 每次列表扩容的倍数</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-7" name="__codelineno-52-7" href="#__codelineno-52-7"></a>
|
|||
|
<a id="__codelineno-52-8" name="__codelineno-52-8" href="#__codelineno-52-8"></a><span class="w"> </span><span class="cm">/* 构造函数 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-9" name="__codelineno-52-9" href="#__codelineno-52-9"></a><span class="w"> </span><span class="kr">constructor</span><span class="p">()</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-10" name="__codelineno-52-10" href="#__codelineno-52-10"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">nums</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="ow">new</span><span class="w"> </span><span class="nb">Array</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">capacity</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-11" name="__codelineno-52-11" href="#__codelineno-52-11"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-12" name="__codelineno-52-12" href="#__codelineno-52-12"></a>
|
|||
|
<a id="__codelineno-52-13" name="__codelineno-52-13" href="#__codelineno-52-13"></a><span class="w"> </span><span class="cm">/* 获取列表长度(即当前元素数量)*/</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-14" name="__codelineno-52-14" href="#__codelineno-52-14"></a><span class="w"> </span><span class="nx">size</span><span class="p">()</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-15" name="__codelineno-52-15" href="#__codelineno-52-15"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">size</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-16" name="__codelineno-52-16" href="#__codelineno-52-16"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-17" name="__codelineno-52-17" href="#__codelineno-52-17"></a>
|
|||
|
<a id="__codelineno-52-18" name="__codelineno-52-18" href="#__codelineno-52-18"></a><span class="w"> </span><span class="cm">/* 获取列表容量 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-19" name="__codelineno-52-19" href="#__codelineno-52-19"></a><span class="w"> </span><span class="nx">capacity</span><span class="p">()</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-20" name="__codelineno-52-20" href="#__codelineno-52-20"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">capacity</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-21" name="__codelineno-52-21" href="#__codelineno-52-21"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-22" name="__codelineno-52-22" href="#__codelineno-52-22"></a>
|
|||
|
<a id="__codelineno-52-23" name="__codelineno-52-23" href="#__codelineno-52-23"></a><span class="w"> </span><span class="cm">/* 访问元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-24" name="__codelineno-52-24" href="#__codelineno-52-24"></a><span class="w"> </span><span class="nx">get</span><span class="p">(</span><span class="nx">index</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-25" name="__codelineno-52-25" href="#__codelineno-52-25"></a><span class="w"> </span><span class="c1">// 索引如果越界则抛出异常,下同</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-26" name="__codelineno-52-26" href="#__codelineno-52-26"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="nx">index</span><span class="w"> </span><span class="o">>=</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">size</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-27" name="__codelineno-52-27" href="#__codelineno-52-27"></a><span class="w"> </span><span class="k">throw</span><span class="w"> </span><span class="ow">new</span><span class="w"> </span><span class="ne">Error</span><span class="p">(</span><span class="s1">'索引越界'</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-28" name="__codelineno-52-28" href="#__codelineno-52-28"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-29" name="__codelineno-52-29" href="#__codelineno-52-29"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">nums</span><span class="p">[</span><span class="nx">index</span><span class="p">];</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-30" name="__codelineno-52-30" href="#__codelineno-52-30"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-31" name="__codelineno-52-31" href="#__codelineno-52-31"></a>
|
|||
|
<a id="__codelineno-52-32" name="__codelineno-52-32" href="#__codelineno-52-32"></a><span class="w"> </span><span class="cm">/* 更新元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-33" name="__codelineno-52-33" href="#__codelineno-52-33"></a><span class="w"> </span><span class="nx">set</span><span class="p">(</span><span class="nx">index</span><span class="p">,</span><span class="w"> </span><span class="nx">num</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-34" name="__codelineno-52-34" href="#__codelineno-52-34"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="nx">index</span><span class="w"> </span><span class="o">>=</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">_size</span><span class="p">)</span><span class="w"> </span><span class="k">throw</span><span class="w"> </span><span class="ow">new</span><span class="w"> </span><span class="ne">Error</span><span class="p">(</span><span class="s1">'索引越界'</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-35" name="__codelineno-52-35" href="#__codelineno-52-35"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">nums</span><span class="p">[</span><span class="nx">index</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">num</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-36" name="__codelineno-52-36" href="#__codelineno-52-36"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-37" name="__codelineno-52-37" href="#__codelineno-52-37"></a>
|
|||
|
<a id="__codelineno-52-38" name="__codelineno-52-38" href="#__codelineno-52-38"></a><span class="w"> </span><span class="cm">/* 尾部添加元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-39" name="__codelineno-52-39" href="#__codelineno-52-39"></a><span class="w"> </span><span class="nx">add</span><span class="p">(</span><span class="nx">num</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-40" name="__codelineno-52-40" href="#__codelineno-52-40"></a><span class="w"> </span><span class="c1">// 如果长度等于容量,则需要扩容</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-41" name="__codelineno-52-41" href="#__codelineno-52-41"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">size</span><span class="w"> </span><span class="o">===</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">capacity</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-42" name="__codelineno-52-42" href="#__codelineno-52-42"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">extendCapacity</span><span class="p">();</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-43" name="__codelineno-52-43" href="#__codelineno-52-43"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-44" name="__codelineno-52-44" href="#__codelineno-52-44"></a><span class="w"> </span><span class="c1">// 将新元素添加到列表尾部</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-45" name="__codelineno-52-45" href="#__codelineno-52-45"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">nums</span><span class="p">[</span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">size</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">num</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-46" name="__codelineno-52-46" href="#__codelineno-52-46"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">size</span><span class="o">++</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-47" name="__codelineno-52-47" href="#__codelineno-52-47"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-48" name="__codelineno-52-48" href="#__codelineno-52-48"></a>
|
|||
|
<a id="__codelineno-52-49" name="__codelineno-52-49" href="#__codelineno-52-49"></a><span class="w"> </span><span class="cm">/* 中间插入元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-50" name="__codelineno-52-50" href="#__codelineno-52-50"></a><span class="w"> </span><span class="nx">insert</span><span class="p">(</span><span class="nx">index</span><span class="p">,</span><span class="w"> </span><span class="nx">num</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-51" name="__codelineno-52-51" href="#__codelineno-52-51"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="nx">index</span><span class="w"> </span><span class="o">>=</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">size</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-52" name="__codelineno-52-52" href="#__codelineno-52-52"></a><span class="w"> </span><span class="k">throw</span><span class="w"> </span><span class="ow">new</span><span class="w"> </span><span class="ne">Error</span><span class="p">(</span><span class="s1">'索引越界'</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-53" name="__codelineno-52-53" href="#__codelineno-52-53"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-54" name="__codelineno-52-54" href="#__codelineno-52-54"></a><span class="w"> </span><span class="c1">// 元素数量超出容量时,触发扩容机制</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-55" name="__codelineno-52-55" href="#__codelineno-52-55"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">size</span><span class="w"> </span><span class="o">===</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">capacity</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-56" name="__codelineno-52-56" href="#__codelineno-52-56"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">extendCapacity</span><span class="p">();</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-57" name="__codelineno-52-57" href="#__codelineno-52-57"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-58" name="__codelineno-52-58" href="#__codelineno-52-58"></a><span class="w"> </span><span class="c1">// 将索引 index 以及之后的元素都向后移动一位</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-59" name="__codelineno-52-59" href="#__codelineno-52-59"></a><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kd">let</span><span class="w"> </span><span class="nx">j</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">size</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="mf">1</span><span class="p">;</span><span class="w"> </span><span class="nx">j</span><span class="w"> </span><span class="o">>=</span><span class="w"> </span><span class="nx">index</span><span class="p">;</span><span class="w"> </span><span class="nx">j</span><span class="o">--</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-60" name="__codelineno-52-60" href="#__codelineno-52-60"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">nums</span><span class="p">[</span><span class="nx">j</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="mf">1</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">nums</span><span class="p">[</span><span class="nx">j</span><span class="p">];</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-61" name="__codelineno-52-61" href="#__codelineno-52-61"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-62" name="__codelineno-52-62" href="#__codelineno-52-62"></a><span class="w"> </span><span class="c1">// 更新元素数量</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-63" name="__codelineno-52-63" href="#__codelineno-52-63"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">nums</span><span class="p">[</span><span class="nx">index</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">num</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-64" name="__codelineno-52-64" href="#__codelineno-52-64"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">size</span><span class="o">++</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-65" name="__codelineno-52-65" href="#__codelineno-52-65"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-66" name="__codelineno-52-66" href="#__codelineno-52-66"></a>
|
|||
|
<a id="__codelineno-52-67" name="__codelineno-52-67" href="#__codelineno-52-67"></a><span class="w"> </span><span class="cm">/* 删除元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-68" name="__codelineno-52-68" href="#__codelineno-52-68"></a><span class="w"> </span><span class="nx">remove</span><span class="p">(</span><span class="nx">index</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-69" name="__codelineno-52-69" href="#__codelineno-52-69"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="nx">index</span><span class="w"> </span><span class="o">>=</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">size</span><span class="p">)</span><span class="w"> </span><span class="k">throw</span><span class="w"> </span><span class="ow">new</span><span class="w"> </span><span class="ne">Error</span><span class="p">(</span><span class="s1">'索引越界'</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-70" name="__codelineno-52-70" href="#__codelineno-52-70"></a><span class="w"> </span><span class="kd">let</span><span class="w"> </span><span class="nx">num</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">nums</span><span class="p">[</span><span class="nx">index</span><span class="p">];</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-71" name="__codelineno-52-71" href="#__codelineno-52-71"></a><span class="w"> </span><span class="c1">// 将索引 index 之后的元素都向前移动一位</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-72" name="__codelineno-52-72" href="#__codelineno-52-72"></a><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kd">let</span><span class="w"> </span><span class="nx">j</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">index</span><span class="p">;</span><span class="w"> </span><span class="nx">j</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">size</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="mf">1</span><span class="p">;</span><span class="w"> </span><span class="nx">j</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-73" name="__codelineno-52-73" href="#__codelineno-52-73"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">nums</span><span class="p">[</span><span class="nx">j</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">nums</span><span class="p">[</span><span class="nx">j</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="mf">1</span><span class="p">];</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-74" name="__codelineno-52-74" href="#__codelineno-52-74"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-75" name="__codelineno-52-75" href="#__codelineno-52-75"></a><span class="w"> </span><span class="c1">// 更新元素数量</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-76" name="__codelineno-52-76" href="#__codelineno-52-76"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">size</span><span class="o">--</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-77" name="__codelineno-52-77" href="#__codelineno-52-77"></a><span class="w"> </span><span class="c1">// 返回被删除元素</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-78" name="__codelineno-52-78" href="#__codelineno-52-78"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="nx">num</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-79" name="__codelineno-52-79" href="#__codelineno-52-79"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-80" name="__codelineno-52-80" href="#__codelineno-52-80"></a>
|
|||
|
<a id="__codelineno-52-81" name="__codelineno-52-81" href="#__codelineno-52-81"></a><span class="w"> </span><span class="cm">/* 列表扩容 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-82" name="__codelineno-52-82" href="#__codelineno-52-82"></a><span class="w"> </span><span class="nx">extendCapacity</span><span class="p">()</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-83" name="__codelineno-52-83" href="#__codelineno-52-83"></a><span class="w"> </span><span class="c1">// 新建一个长度为 size 的数组,并将原数组拷贝到新数组</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-84" name="__codelineno-52-84" href="#__codelineno-52-84"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">nums</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">nums</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-85" name="__codelineno-52-85" href="#__codelineno-52-85"></a><span class="w"> </span><span class="ow">new</span><span class="w"> </span><span class="nb">Array</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">capacity</span><span class="p">()</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">extendRatio</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="mf">1</span><span class="p">))</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-86" name="__codelineno-52-86" href="#__codelineno-52-86"></a><span class="w"> </span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-87" name="__codelineno-52-87" href="#__codelineno-52-87"></a><span class="w"> </span><span class="c1">// 更新列表容量</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-88" name="__codelineno-52-88" href="#__codelineno-52-88"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">capacity</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">nums</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-89" name="__codelineno-52-89" href="#__codelineno-52-89"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-52-90" name="__codelineno-52-90" href="#__codelineno-52-90"></a><span class="p">}</span><span class="w"></span>
|
|||
|
</code></pre></div>
|
|||
|
</div>
|
|||
|
<div class="tabbed-block">
|
|||
|
<div class="highlight"><span class="filename">my_list.ts</span><pre><span></span><code><a id="__codelineno-53-1" name="__codelineno-53-1" href="#__codelineno-53-1"></a><span class="cm">/* 列表类简易实现 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-2" name="__codelineno-53-2" href="#__codelineno-53-2"></a><span class="kd">class</span><span class="w"> </span><span class="nx">MyList</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-3" name="__codelineno-53-3" href="#__codelineno-53-3"></a><span class="w"> </span><span class="k">private</span><span class="w"> </span><span class="nx">nums</span><span class="o">:</span><span class="w"> </span><span class="kt">Array</span><span class="o"><</span><span class="kt">number</span><span class="o">></span><span class="p">;</span><span class="w"> </span><span class="c1">// 数组(存储列表元素)</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-4" name="__codelineno-53-4" href="#__codelineno-53-4"></a><span class="w"> </span><span class="k">private</span><span class="w"> </span><span class="nx">_capacity</span><span class="o">:</span><span class="w"> </span><span class="kt">number</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">10</span><span class="p">;</span><span class="w"> </span><span class="c1">// 列表容量</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-5" name="__codelineno-53-5" href="#__codelineno-53-5"></a><span class="w"> </span><span class="k">private</span><span class="w"> </span><span class="nx">_size</span><span class="o">:</span><span class="w"> </span><span class="kt">number</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">0</span><span class="p">;</span><span class="w"> </span><span class="c1">// 列表长度(即当前元素数量)</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-6" name="__codelineno-53-6" href="#__codelineno-53-6"></a><span class="w"> </span><span class="k">private</span><span class="w"> </span><span class="nx">extendRatio</span><span class="o">:</span><span class="w"> </span><span class="kt">number</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">2</span><span class="p">;</span><span class="w"> </span><span class="c1">// 每次列表扩容的倍数</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-7" name="__codelineno-53-7" href="#__codelineno-53-7"></a>
|
|||
|
<a id="__codelineno-53-8" name="__codelineno-53-8" href="#__codelineno-53-8"></a><span class="w"> </span><span class="cm">/* 构造函数 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-9" name="__codelineno-53-9" href="#__codelineno-53-9"></a><span class="w"> </span><span class="kr">constructor</span><span class="p">()</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-10" name="__codelineno-53-10" href="#__codelineno-53-10"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">nums</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="ow">new</span><span class="w"> </span><span class="nb">Array</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_capacity</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-11" name="__codelineno-53-11" href="#__codelineno-53-11"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-12" name="__codelineno-53-12" href="#__codelineno-53-12"></a>
|
|||
|
<a id="__codelineno-53-13" name="__codelineno-53-13" href="#__codelineno-53-13"></a><span class="w"> </span><span class="cm">/* 获取列表长度(即当前元素数量)*/</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-14" name="__codelineno-53-14" href="#__codelineno-53-14"></a><span class="w"> </span><span class="k">public</span><span class="w"> </span><span class="nx">size</span><span class="p">()</span><span class="o">:</span><span class="w"> </span><span class="kt">number</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-15" name="__codelineno-53-15" href="#__codelineno-53-15"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">_size</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-16" name="__codelineno-53-16" href="#__codelineno-53-16"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-17" name="__codelineno-53-17" href="#__codelineno-53-17"></a>
|
|||
|
<a id="__codelineno-53-18" name="__codelineno-53-18" href="#__codelineno-53-18"></a><span class="w"> </span><span class="cm">/* 获取列表容量 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-19" name="__codelineno-53-19" href="#__codelineno-53-19"></a><span class="w"> </span><span class="k">public</span><span class="w"> </span><span class="nx">capacity</span><span class="p">()</span><span class="o">:</span><span class="w"> </span><span class="kt">number</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-20" name="__codelineno-53-20" href="#__codelineno-53-20"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">_capacity</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-21" name="__codelineno-53-21" href="#__codelineno-53-21"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-22" name="__codelineno-53-22" href="#__codelineno-53-22"></a>
|
|||
|
<a id="__codelineno-53-23" name="__codelineno-53-23" href="#__codelineno-53-23"></a><span class="w"> </span><span class="cm">/* 访问元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-24" name="__codelineno-53-24" href="#__codelineno-53-24"></a><span class="w"> </span><span class="k">public</span><span class="w"> </span><span class="nx">get</span><span class="p">(</span><span class="nx">index</span><span class="o">:</span><span class="w"> </span><span class="kt">number</span><span class="p">)</span><span class="o">:</span><span class="w"> </span><span class="kt">number</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-25" name="__codelineno-53-25" href="#__codelineno-53-25"></a><span class="w"> </span><span class="c1">// 索引如果越界则抛出异常,下同</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-26" name="__codelineno-53-26" href="#__codelineno-53-26"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="nx">index</span><span class="w"> </span><span class="o">>=</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">_size</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-27" name="__codelineno-53-27" href="#__codelineno-53-27"></a><span class="w"> </span><span class="k">throw</span><span class="w"> </span><span class="ow">new</span><span class="w"> </span><span class="ne">Error</span><span class="p">(</span><span class="s1">'索引越界'</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-28" name="__codelineno-53-28" href="#__codelineno-53-28"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-29" name="__codelineno-53-29" href="#__codelineno-53-29"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">nums</span><span class="p">[</span><span class="nx">index</span><span class="p">];</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-30" name="__codelineno-53-30" href="#__codelineno-53-30"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-31" name="__codelineno-53-31" href="#__codelineno-53-31"></a>
|
|||
|
<a id="__codelineno-53-32" name="__codelineno-53-32" href="#__codelineno-53-32"></a><span class="w"> </span><span class="cm">/* 更新元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-33" name="__codelineno-53-33" href="#__codelineno-53-33"></a><span class="w"> </span><span class="k">public</span><span class="w"> </span><span class="nx">set</span><span class="p">(</span><span class="nx">index</span><span class="o">:</span><span class="w"> </span><span class="kt">number</span><span class="p">,</span><span class="w"> </span><span class="nx">num</span><span class="o">:</span><span class="w"> </span><span class="kt">number</span><span class="p">)</span><span class="o">:</span><span class="w"> </span><span class="ow">void</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-34" name="__codelineno-53-34" href="#__codelineno-53-34"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="nx">index</span><span class="w"> </span><span class="o">>=</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">_size</span><span class="p">)</span><span class="w"> </span><span class="k">throw</span><span class="w"> </span><span class="ow">new</span><span class="w"> </span><span class="ne">Error</span><span class="p">(</span><span class="s1">'索引越界'</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-35" name="__codelineno-53-35" href="#__codelineno-53-35"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">nums</span><span class="p">[</span><span class="nx">index</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">num</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-36" name="__codelineno-53-36" href="#__codelineno-53-36"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-37" name="__codelineno-53-37" href="#__codelineno-53-37"></a>
|
|||
|
<a id="__codelineno-53-38" name="__codelineno-53-38" href="#__codelineno-53-38"></a><span class="w"> </span><span class="cm">/* 尾部添加元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-39" name="__codelineno-53-39" href="#__codelineno-53-39"></a><span class="w"> </span><span class="k">public</span><span class="w"> </span><span class="nx">add</span><span class="p">(</span><span class="nx">num</span><span class="o">:</span><span class="w"> </span><span class="kt">number</span><span class="p">)</span><span class="o">:</span><span class="w"> </span><span class="ow">void</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-40" name="__codelineno-53-40" href="#__codelineno-53-40"></a><span class="w"> </span><span class="c1">// 如果长度等于容量,则需要扩容</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-41" name="__codelineno-53-41" href="#__codelineno-53-41"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_size</span><span class="w"> </span><span class="o">===</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">_capacity</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-42" name="__codelineno-53-42" href="#__codelineno-53-42"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">extendCapacity</span><span class="p">();</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-43" name="__codelineno-53-43" href="#__codelineno-53-43"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-44" name="__codelineno-53-44" href="#__codelineno-53-44"></a><span class="w"> </span><span class="c1">// 将新元素添加到列表尾部</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-45" name="__codelineno-53-45" href="#__codelineno-53-45"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">nums</span><span class="p">[</span><span class="k">this</span><span class="p">.</span><span class="nx">_size</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">num</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-46" name="__codelineno-53-46" href="#__codelineno-53-46"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">_size</span><span class="o">++</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-47" name="__codelineno-53-47" href="#__codelineno-53-47"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-48" name="__codelineno-53-48" href="#__codelineno-53-48"></a>
|
|||
|
<a id="__codelineno-53-49" name="__codelineno-53-49" href="#__codelineno-53-49"></a><span class="w"> </span><span class="cm">/* 中间插入元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-50" name="__codelineno-53-50" href="#__codelineno-53-50"></a><span class="w"> </span><span class="k">public</span><span class="w"> </span><span class="nx">insert</span><span class="p">(</span><span class="nx">index</span><span class="o">:</span><span class="w"> </span><span class="kt">number</span><span class="p">,</span><span class="w"> </span><span class="nx">num</span><span class="o">:</span><span class="w"> </span><span class="kt">number</span><span class="p">)</span><span class="o">:</span><span class="w"> </span><span class="ow">void</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-51" name="__codelineno-53-51" href="#__codelineno-53-51"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="nx">index</span><span class="w"> </span><span class="o">>=</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">_size</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-52" name="__codelineno-53-52" href="#__codelineno-53-52"></a><span class="w"> </span><span class="k">throw</span><span class="w"> </span><span class="ow">new</span><span class="w"> </span><span class="ne">Error</span><span class="p">(</span><span class="s1">'索引越界'</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-53" name="__codelineno-53-53" href="#__codelineno-53-53"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-54" name="__codelineno-53-54" href="#__codelineno-53-54"></a><span class="w"> </span><span class="c1">// 元素数量超出容量时,触发扩容机制</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-55" name="__codelineno-53-55" href="#__codelineno-53-55"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_size</span><span class="w"> </span><span class="o">===</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">_capacity</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-56" name="__codelineno-53-56" href="#__codelineno-53-56"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">extendCapacity</span><span class="p">();</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-57" name="__codelineno-53-57" href="#__codelineno-53-57"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-58" name="__codelineno-53-58" href="#__codelineno-53-58"></a><span class="w"> </span><span class="c1">// 将索引 index 以及之后的元素都向后移动一位</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-59" name="__codelineno-53-59" href="#__codelineno-53-59"></a><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kd">let</span><span class="w"> </span><span class="nx">j</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">_size</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="mf">1</span><span class="p">;</span><span class="w"> </span><span class="nx">j</span><span class="w"> </span><span class="o">>=</span><span class="w"> </span><span class="nx">index</span><span class="p">;</span><span class="w"> </span><span class="nx">j</span><span class="o">--</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-60" name="__codelineno-53-60" href="#__codelineno-53-60"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">nums</span><span class="p">[</span><span class="nx">j</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="mf">1</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">nums</span><span class="p">[</span><span class="nx">j</span><span class="p">];</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-61" name="__codelineno-53-61" href="#__codelineno-53-61"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-62" name="__codelineno-53-62" href="#__codelineno-53-62"></a><span class="w"> </span><span class="c1">// 更新元素数量</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-63" name="__codelineno-53-63" href="#__codelineno-53-63"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">nums</span><span class="p">[</span><span class="nx">index</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">num</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-64" name="__codelineno-53-64" href="#__codelineno-53-64"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">_size</span><span class="o">++</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-65" name="__codelineno-53-65" href="#__codelineno-53-65"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-66" name="__codelineno-53-66" href="#__codelineno-53-66"></a>
|
|||
|
<a id="__codelineno-53-67" name="__codelineno-53-67" href="#__codelineno-53-67"></a><span class="w"> </span><span class="cm">/* 删除元素 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-68" name="__codelineno-53-68" href="#__codelineno-53-68"></a><span class="w"> </span><span class="k">public</span><span class="w"> </span><span class="nx">remove</span><span class="p">(</span><span class="nx">index</span><span class="o">:</span><span class="w"> </span><span class="kt">number</span><span class="p">)</span><span class="o">:</span><span class="w"> </span><span class="kt">number</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-69" name="__codelineno-53-69" href="#__codelineno-53-69"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="nx">index</span><span class="w"> </span><span class="o">>=</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">_size</span><span class="p">)</span><span class="w"> </span><span class="k">throw</span><span class="w"> </span><span class="ow">new</span><span class="w"> </span><span class="ne">Error</span><span class="p">(</span><span class="s1">'索引越界'</span><span class="p">);</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-70" name="__codelineno-53-70" href="#__codelineno-53-70"></a><span class="w"> </span><span class="kd">let</span><span class="w"> </span><span class="nx">num</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">nums</span><span class="p">[</span><span class="nx">index</span><span class="p">];</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-71" name="__codelineno-53-71" href="#__codelineno-53-71"></a><span class="w"> </span><span class="c1">// 将索引 index 之后的元素都向前移动一位</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-72" name="__codelineno-53-72" href="#__codelineno-53-72"></a><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kd">let</span><span class="w"> </span><span class="nx">j</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">index</span><span class="p">;</span><span class="w"> </span><span class="nx">j</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">_size</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="mf">1</span><span class="p">;</span><span class="w"> </span><span class="nx">j</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-73" name="__codelineno-53-73" href="#__codelineno-53-73"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">nums</span><span class="p">[</span><span class="nx">j</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">nums</span><span class="p">[</span><span class="nx">j</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="mf">1</span><span class="p">];</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-74" name="__codelineno-53-74" href="#__codelineno-53-74"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-75" name="__codelineno-53-75" href="#__codelineno-53-75"></a><span class="w"> </span><span class="c1">// 更新元素数量</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-76" name="__codelineno-53-76" href="#__codelineno-53-76"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">_size</span><span class="o">--</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-77" name="__codelineno-53-77" href="#__codelineno-53-77"></a><span class="w"> </span><span class="c1">// 返回被删除元素</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-78" name="__codelineno-53-78" href="#__codelineno-53-78"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="nx">num</span><span class="p">;</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-79" name="__codelineno-53-79" href="#__codelineno-53-79"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-80" name="__codelineno-53-80" href="#__codelineno-53-80"></a>
|
|||
|
<a id="__codelineno-53-81" name="__codelineno-53-81" href="#__codelineno-53-81"></a><span class="w"> </span><span class="cm">/* 列表扩容 */</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-82" name="__codelineno-53-82" href="#__codelineno-53-82"></a><span class="w"> </span><span class="k">public</span><span class="w"> </span><span class="nx">extendCapacity</span><span class="p">()</span><span class="o">:</span><span class="w"> </span><span class="ow">void</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-83" name="__codelineno-53-83" href="#__codelineno-53-83"></a><span class="w"> </span><span class="c1">// 新建一个长度为 size 的数组,并将原数组拷贝到新数组</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-84" name="__codelineno-53-84" href="#__codelineno-53-84"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">nums</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">nums</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="w"></span>
|
|||
|
<a id="__codelineno-53-85" name="__codelineno-53-85" href="#__codelineno-53-85"></a><span class="w"> </span><span class="ow">new</span><span class="w"> </span><span class="nb">Array</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">capacity</span><span class="p">()</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">extendRatio</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="mf">1</span><span class="p">))</span><span class="w"></span>
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<a id="__codelineno-53-86" name="__codelineno-53-86" href="#__codelineno-53-86"></a><span class="w"> </span><span class="p">);</span><span class="w"></span>
|
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<a id="__codelineno-53-87" name="__codelineno-53-87" href="#__codelineno-53-87"></a><span class="w"> </span><span class="c1">// 更新列表容量</span><span class="w"></span>
|
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<a id="__codelineno-53-88" name="__codelineno-53-88" href="#__codelineno-53-88"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">_capacity</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">nums</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span><span class="w"></span>
|
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<a id="__codelineno-53-89" name="__codelineno-53-89" href="#__codelineno-53-89"></a><span class="w"> </span><span class="p">}</span><span class="w"></span>
|
|||
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<a id="__codelineno-53-90" name="__codelineno-53-90" href="#__codelineno-53-90"></a><span class="p">}</span><span class="w"></span>
|
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</code></pre></div>
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|
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<div class="highlight"><span class="filename">my_list.c</span><pre><span></span><code><a id="__codelineno-54-1" name="__codelineno-54-1" href="#__codelineno-54-1"></a>
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</code></pre></div>
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<div class="highlight"><span class="filename">my_list.cs</span><pre><span></span><code><a id="__codelineno-55-1" name="__codelineno-55-1" href="#__codelineno-55-1"></a>
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