queue

what is a queue ? queue is quite similar to the stack.... while a stack is first in last out a queue is first in and first out (quite fair as life)

where it is used?

queue is used in a real life line examples.

class Queue {  collection = [];  print = () => {    console.log(this.collection);  };  enqueue = (element) => {    this.collection.push(element);  };  dequeue = (element) => {    return this.collection.shift();  };  front = () => {    if (collection.length > 0) {      return this.collection[0];    } else {      return -1;    }  };  size = () => {    return this.collection.length;  };  isEmpty = () => {    return this.collection.length === 0 ? 1 : 0;  };}let q = new Queue();q.enqueue(5);q.print();q.enqueue(10);console.log(q.size());console.log(q.deueue);q.print();