Merge pull request #44 from qualifier1024/patch-13

Update array_stack.cpp

codes/cpp/chapter_stack_and_queue/array_stack.cpp

@@ -1,8 +1,82 @@
 /*
  * File: array_stack.cpp
- * Created Time: 2022-11-25
- * Author: Krahets (krahets@163.com)
+ * Created Time: 2022-11-28
+ * Author: qualifier1024 (2539244001@qq.com)
  */
 
 #include "../include/include.hpp"
 
+/* 基于数组实现的栈 */
+class ArrayStack {
+private:
+    vector<int> vec;
+public:
+    /* 获取栈的长度 */
+    int size() {
+        return vec.size();
+    }
+
+    /* 判断栈是否为空 */
+    bool empty() {
+        return vec.empty();
+    }
+
+    /* 入栈 */
+    void push(int num) {
+        vec.push_back(num);
+    }
+
+    /* 出栈 */
+    int pop() {
+        int oldTop = vec.back();
+        vec.pop_back();
+        return oldTop;
+    }
+
+    /* 访问栈顶元素 */
+    int top() {
+        return vec.back();
+    }
+
+    /* 返回 Vector */
+    vector<int> toVector() {
+        return vec;
+    }
+};
+
+
+/* Driver Code */
+int main() {
+    /* 初始化栈 */
+    ArrayStack* stack = new ArrayStack();
+
+    /* 元素入栈 */
+    stack->push(1);
+    stack->push(3);
+    stack->push(2);
+    stack->push(5);
+    stack->push(4);
+    cout << "栈 stack = ";
+    vector<int> vec = stack->toVector();
+    PrintUtil::printVector(vec);
+
+    /* 访问栈顶元素 */
+    int top = stack->top();
+    cout << "栈顶元素 top = " << top << endl;
+
+    /* 元素出栈 */
+    int pop = stack->pop();
+    cout << "出栈元素 pop = " << pop << "，出栈后 stack = ";
+    vec = stack->toVector();
+    PrintUtil::printVector(vec);
+
+    /* 获取栈的长度 */
+    int size = stack->size();
+    cout << "栈的长度 size = " << size << endl;
+
+    /* 判断是否为空 */
+    bool empty = stack->empty();
+    cout << "栈是否为空 = " << empty << endl;
+
+    return 0;
+}