Damimd10

function createQueue() {
  const queue = [];
  
  return {
    enqueue(item) {
      queue.unshift(item)
    },
    dequeue() {
      return queue.pop()
    },

Damimd10

import { createQueue } from './index';

function createPriorityQueue() {
  const lowPriorityQueue = createQueue();
  const highPriorityQueue = createQueue();

  return {
    enqueue(item, isHighPriority = false) {
      isHighPriority 
        ? highPriorityQueue.enqueue(item) 

Damimd10

function createStack() {
  const stack = []
  
  return {
    push(item) {
      stack.push(item)
    },
    pop() {
      return stack.pop()
    },

Damimd10

function createNode(value) {
  return {
    value,
    next: null
  }
}

function createLinkedList() {
  return {
    head: null,

Damimd10

const { createQueue } = require('../queues/index.js')

function createNode(key) {
  const children = []

  return {
    key,
    children,
    addChild(node) {
      children.push(node)

Damimd10

function createNode(key) {
  const children = []

  return {
    key,
    children,
    addChild(childKey) {
      const childNode = createNode(childKey)
      children.push(childNode)
      return childNode

Damimd10

function createBinaryNode(key) {
  return {
    key,
    left: null,
    right: null,
    addLeft(leftKey) {
      const newLeft = createBinaryNode(leftKey)
      this.left = newLeft
      return newLeft
    },

Damimd10

// global scope
var name = 'Damian';

function getName() {
  console.log(name); // 'Damian'
}

Damimd10

// global scope
var name = 'Damian';

function getName(name) { // passing (name) makes it local scope
  console.log(a); // log the given argument, not the global value of '1'
}

// local scope again
function localScope() {
  var isGlobalScope = false;

Damimd10

var canIVote = 'No';

function areYouOlderThan18() {
  if (true) {
    var canIVote = 'Yes';
  }

  console.log(canIVote); // log 'Yes', not the global value of 'No'
}