Create 232-implement-queue-using-stacks.js

Author: everthis

232-implement-queue-using-stacks.js

@@ -0,0 +1,48 @@
+/**
+ * Initialize your data structure here.
+ */
+const MyQueue = function() {
+    this.queue = []
+};
+
+/**
+ * Push element x to the back of queue. 
+ * @param {number} x
+ * @return {void}
+ */
+MyQueue.prototype.push = function(x) {
+    this.queue.push(x)
+};
+
+/**
+ * Removes the element from in front of queue and returns that element.
+ * @return {number}
+ */
+MyQueue.prototype.pop = function() {
+    return this.queue.shift()
+};
+
+/**
+ * Get the front element.
+ * @return {number}
+ */
+MyQueue.prototype.peek = function() {
+    return this.queue[0]
+};
+
+/**
+ * Returns whether the queue is empty.
+ * @return {boolean}
+ */
+MyQueue.prototype.empty = function() {
+    return this.queue.length === 0
+};
+
+/** 
+ * Your MyQueue object will be instantiated and called as such:
+ * var obj = Object.create(MyQueue).createNew()
+ * obj.push(x)
+ * var param_2 = obj.pop()
+ * var param_3 = obj.peek()
+ * var param_4 = obj.empty()
+ */