Adressing issue Yet-Another-Series#103 - Added js-queue.js

Data_Structures/queues/js-queue.js

@@ -0,0 +1,50 @@
+class Queue {
+  constructor(...elements) {
+    // State to hold the queue elements
+    this._elements = [];
+    // Init the queue using the initial arguments
+    this.enqueue(...elements);
+  }
+  /**
+   * @function enqueue
+   * @param  {any} elements: the items to enqueue
+   */
+  enqueue(...elements) {
+    this._elements = [...this._elements, ...elements];
+  }
+  /**
+   * @function dequeue
+   * @return {any}, Dequeues an item and returns it. If the queue is empty, returns null
+   */
+  dequeue() {
+    return this.empty() ? null :this._elements.shift();
+  }
+  /**
+   * @function keyFront
+   * @return {any} ,Returns the first element in the queue. If the queue is empty, returns null
+   */
+  keyFront() {
+    return this.empty() ? null : this._elements[0];
+  }
+  /**
+   * @function empty
+   * @return {Boolean}, true if the queue is empty, and false otherwise
+   */
+  empty() {
+    return this._elements.length === 0;
+  }
+  /**
+   * @function disp
+   * @return {None} Displays the elements in the queue
+   */
+  disp() {
+    console.log(this._elements);
+  }
+  /**
+   * @function getLength
+   * @return {Number} Returns the number of elements in the queue
+   */
+  getLength() {
+    return this._elements.length;
+  }
+}