rxluz

function PriorityQueue() {
  let priority = []
  let nonPriority = []

  class PublicPriorityQueue {
    size() {
      return priority.length + nonPriority.length
    }

    isEmpty() {

rxluz

function Stack() {
  let items = []

  class PublicStack {
    peek() {
      if (this.isEmpty()) throw new Error('Stack is empty')
      const lastItemIndex = items.length - 1

      return items[lastItemIndex]
    }

rxluz

function Stack() {
  let items = []

  class PublicStack {
    peek() {
      if (this.isEmpty()) throw new Error('Stack is empty')
      const lastItemIndex = items.length - 1

      return items[lastItemIndex]
    }

rxluz

function Stack() {
  let items = []

  class PublicStack {
    peek() {
      if (this.isEmpty()) throw new Error('Stack is empty')
      const lastItemIndex = items.length - 1

      return items[lastItemIndex]
    }

rxluz

function Stack() {
  let top = null
  let size = 0

  class Node {
    constructor(data) {
      this.data = data
      this.previous = null
    }
  }

rxluz

function Stack() {
  let items = []

  class PublicStack {
    peek() {
      if (this.isEmpty()) throw new Error('Stack is empty')
      const lastItemIndex = items.length - 1

      return items[lastItemIndex]
    }

rxluz

const animals = ['elephant', 'monkey', 'snake', 'lion', 'zebra']

const reverseArray = currentArray => {
  for (let index = 0; index < currentArray.length / 2; index++) {
    const currentItem = currentArray[index]
    const otherItem = currentArray[currentArray.length - 1 - index]

    currentArray[index] = otherItem
    currentArray[currentArray.length - 1 - index] = currentItem
  }

rxluz

const animals = ['elephant', 'monkey', 'snake', 'lion']

const desiredPositionToRemove = 2

for (var index = desiredPositionToRemove; index < animals.length; index++) {
  animals[index] = animals[index + 1]
}

animals.length = animals.length - 1

rxluz

const animals = ["elephant", "monkey", "snake", "lion"];

for (let index = 0; index < animals.length; index++) {
  animals[index] = animals[index + 1];
}

animals.length = animals.length - 1;

console.log(animals);

rxluz

const animals = ["elephant", "monkey", "snake", "lion"];

const positionToAddNewItem = 2;

for (let index = animals.length; index > positionToAddNewItem; index--) {
  animals[index] = animals[index - 1];
}

animals[positionToAddNewItem] = "macaw";