const Queue = require('queue-ll-ds') //returns class
//To create an instance const myQueue = new Queue();
//Methods :
//To add items: myQueue.enqueue(item)
//To delete items: myQueue.dequeue()
//To access first element: myQueue.first()
//To access last element: myQueue.last()
//To view data in array format: myQueue.pretty()
//Get length of queue: myQueue.length()
//Each method returns an object