Update stack and queue.

codes/cpp/chapter_stack_and_queue/deque.cpp

@@ -6,3 +6,42 @@
 
 #include "../include/include.hpp"
 
+
+/* Driver Code */
+int main() {
+    /* 初始化双向队列 */
+    deque<int> deque;
+
+    /* 元素入队 */
+    deque.push_back(2);
+    deque.push_back(5);
+    deque.push_back(4);
+    deque.push_front(3);
+    deque.push_front(1);
+    cout << "双向队列 deque = ";
+    PrintUtil::printDeque(deque);
+
+    /* 访问队首元素 */
+    int front = deque.front();
+    cout << "队首元素 front = " << front << endl;
+    int back = deque.back();
+    cout << "队尾元素 back = " << back << endl;
+
+    /* 元素出队 */
+    deque.pop_front();
+    cout << "队首出队元素 popFront = " << front << "，队首出队后 deque = ";
+    PrintUtil::printDeque(deque);
+    deque.pop_back();
+    cout << "队尾出队元素 popLast = " << back << "，队尾出队后 deque = ";
+    PrintUtil::printDeque(deque);
+
+    /* 获取双向队列的长度 */
+    int size = deque.size();
+    cout << "双向队列长度 size = " << size << endl;
+
+    /* 判断双向队列是否为空 */
+    bool empty = deque.empty();
+    cout << "双向队列是否为空 = " << empty << endl;
+
+    return 0;
+}