Adding solution for queue class (#36319)

curriculum/challenges/english/08-coding-interview-prep/data-structures/create-a-queue-class.english.md

@@ -68,6 +68,32 @@ function Queue() {
 <section id='solution'>
 
 ```js
-// solution required
+function Queue () { 
+    var collection = [];
+    this.print = function() {
+        console.log(collection);
+    };
+    // Only change code below this line
+    this.enqueue = function(item) {
+        collection.push(item);
+    }
+
+    this.dequeue = function() {
+        return collection.shift();
+    }
+
+    this.front = function() {
+        return collection[0];
+    }
+
+    this.size = function(){
+        return collection.length;
+    }
+
+    this.isEmpty = function() {
+        return collection.length === 0 ? true : false;
+    }
+    // Only change code above this line
+}
 ```
 </section>