Update linear_search.py

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timi 2022-12-03 22:54:19 +08:00 committed by GitHub
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@ -1,10 +1,38 @@
'''
File: linear_search.py
Created Time: 2022-11-25
Author: Krahets (krahets@163.com)
Created Time: 2022-11-26
Author: timi (xisunyy@163.com)
'''
import sys, os.path as osp
sys.path.append(osp.dirname(osp.dirname(osp.abspath(__file__))))
from include import *
""" 线性查找(数组) """
def linear_search(nums,target):
# 遍历数组
for i in range(len(nums)):
if nums[i]==target: # 找到目标元素,返回其索引
return i
return -1 # 未找到目标元素,返回 -1
""" 线性查找(链表) """
def linear_search_by_link(head,target):
# 遍历链表
while head:
if head.val==target: # 找到目标结点,返回之
return head
head=head.next
return None # 未找到目标结点,返回 None (Python为None)
if __name__=='__main__':
target=3
# 在数组中执行线性查找
nums=[1, 5, 3, 2, 4, 7, 5, 9, 10, 8]
index=linear_search(nums,target)
print("目标元素 3 的索引 = " ,index)
# 在链表中执行线性查找
head=list_to_linked_list(nums)
node=linear_search_by_link(head,target)
print("目标结点值 3 的对应结点对象为 " ,node)