anish000kumar

function Node(value, parent = null){
  this.value = value
  this.left = null
  this.right = null
  this.parent = parent
  
}

// create tree

anish000kumar

var Queue = (()=>{
  const map = new WeakMap();
  let _items = []
  class Queue{
    constructor(...items){
      //initialize the items in queue
      map.set(this, []);
      _items = map.get(this);
      // enqueuing the items passed to the constructor
      this.enqueue(...items)

anish000kumar

let Stack = (()=>{
  
 let map = new WeakMap();
 let _items = [];

  class Stack {
  constructor(...items){
    // let's store our items array inside the weakmap
    map.set(this, []);
    // let's get the items array from map, and store it in _items for easy access elsewhere