Data Structures: Create a Queue Class

Data Structures/queueClass.js

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+// https://www.freecodecamp.org/learn/coding-interview-prep/data-structures/create-a-queue-class
+
+function Queue() {
+  var collection = [];
+  this.print = function () {
+    console.log(collection);
+  };
+  // Only change code below this line
+  this.enqueue = function (elem) {
+    collection.push(elem);
+  };
+  this.dequeue = function () {
+    return collection.shift();
+  };
+  this.front = function () {
+    return collection[0];
+  };
+  this.size = function () {
+    return collection.length;
+  };
+  this.isEmpty = function () {
+    return !collection.length;
+  };
+  // Only change code above this line
+}