Add the initial EN translation for C++ code (#1346)

en/codes/cpp/chapter_stack_and_queue/deque.cpp

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+/**
+ * File: deque.cpp
+ * Created Time: 2022-11-25
+ * Author: krahets (krahets@163.com)
+ */
+
+#include "../utils/common.hpp"
+
+/* Driver Code */
+int main() {
+    /* Initialize double-ended queue */
+    deque<int> deque;
+
+    /* Element enqueue */
+    deque.push_back(2);
+    deque.push_back(5);
+    deque.push_back(4);
+    deque.push_front(3);
+    deque.push_front(1);
+    cout << "Double-ended queue deque = ";
+    printDeque(deque);
+
+    /* Access element */
+    int front = deque.front();
+    cout << "Front element of the queue front = " << front << endl;
+    int back = deque.back();
+    cout << "Back element of the queue back = " << back << endl;
+
+    /* Element dequeue */
+    deque.pop_front();
+    cout << "Front element dequeued = " << front << ", after dequeuing from the front";
+    printDeque(deque);
+    deque.pop_back();
+    cout << "Back element dequeued = " << back << ", after dequeuing from the back";
+    printDeque(deque);
+
+    /* Get the length of the double-ended queue */
+    int size = deque.size();
+    cout << "Length of the double-ended queue size = " << size << endl;
+
+    /* Determine if the double-ended queue is empty */
+    bool empty = deque.empty();
+    cout << "Is the double-ended queue empty = " << empty << endl;
+
+    return 0;
+}