* Functions:

 * 1. enqueue(i): Insert element i at the tail of the queue.

 * 2. dequeue() : Remove the element at the head of the queue.

 * 3. size(): returns the current size of the queue

 * 4. peek(): returns the element at the head of the queue without changing the queue

 * 5. list(): Returns the queue as a list

 */

​

var queue;

​

function setup() {

  noCanvas();

  queue = new Queue();

}