Update linkedlist_stack.cpp

Add test code.

codes/cpp/chapter_stack_and_queue/linkedlist_stack.cpp

@@ -5,36 +5,80 @@
  */
 
 #include "../include/include.hpp"
-#include<list>
 
 /* 基于链表实现的栈 */
 class LinkedListStack {
-    list<int> lst;
+private:
+    list<int> list;
 public:
     LinkedListStack() {
         // 初始化空链表
-        lst.clear();
+        list.clear();
     }
     /* 获取栈的长度 */
     int size() {
-        return lst.size();
+        return list.size();
     }
     /* 判断栈是否为空 */
-    bool isEmpty() {
-        return lst.empty();
+    bool empty() {
+        return list.empty();
     }
     /* 入栈 */
     void push(int num) {
-        lst.push_back(num);
+        list.push_back(num);
     }
     /* 出栈 */
     int pop() {
-        int oldTop = lst.back();
-        lst.pop_back();
+        int oldTop = list.back();
+        list.pop_back();
         return oldTop;
     }
     /* 访问栈顶元素 */
     int top() {
-        return lst.back();
+        return list.back();
+    }
+
+    /* 将 List 转化为 Array 并返回 */
+    vector<int> toVector() {
+        vector<int> vec;
+        for (int num : list) {
+            vec.push_back(num);
+        }
+        return vec;
     }
 };
+
+
+/* Driver Code */
+int main() {
+    /* 初始化栈 */
+    LinkedListStack* stack = new LinkedListStack();
+
+    /* 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;
+}