darshna09

class Node {
    constructor(value) {
      this.value = value;
      this.next = null;
    }
}
  
class Queue {
    constructor() {
        this.first = null;

darshna09

class Stack {
    constructor() {
        this.list = [];
    }

    // Peek the top element.
    peek() {
        this.list.length ? console.log(this.list[this.list.length - 1]) : console.log('The stack is empty.');
        return this.list.length;
    }

darshna09

class Node {
    constructor(value) {
        this.value = value;
        this.next = null;
    }
}

class Stack {
    constructor() {
        this.top = null;

darshna09

class Node {
    constructor(value) {
        this.value = value;
        this.next = null;
        this.previous = null;
    }
}

class DoublyLinkedList {
    constructor(value) {

darshna09

// Creating node
class Node {
	constructor(value) {
		this.value = value;
		this.next = null;
	}
}

class LinkedList {
	// Empty Linked List will not be formed.

darshna09

class HashTable {
  constructor(size) {
    this.data = new Array(size);
  }

  // Hash Function
  _hash(key) {
    let hash = 0;
      for(let i = 0; i < key.length; i++) {
        hash = (hash + key.charCodeAt(i) * i) % this.data.length;

darshna09

class HashTable {
    constructor(size) {
        this.data = new Array(size);
    }
 
    // Hash Function
    _hash(key) {
        let hash = 0;
        for (let i = 0; i < key.length; i++) {
            hash = (hash + key.charCodeAt(i) * i) % this.data.length;

darshna09

/**
* @param {string} word
* @return {boolean}
*    true if palindrome else false
*/
function isPalindrome (word) {
    if (word) {
        return word.toLowerCase() === word.toLowerCase().split('').reverse().join('') ? true : false;
    } else {
        return false;

darshna09

// Implement Array in JavaScript

class OurArray {
    constructor () {
        this.length = 0;
        this.data = {};     // An array in JavaScript is Object
    }

    /** Lookup: Time Complexity = O(1)
     * @param {number} index

darshna09

class OurArray {
    constructor () {
        this.length = 0;
        this.data = {};     // An array in JavaScript is Object
    }

    /** Lookup: Time Complexity = O(1)
     * @param {number} index
     * @return {any} item
    */