earlonrails

#!/usr/bin/env node
// https://www.hackerrank.com/challenges/2d-array/problem

class HourGlass {
  constructor(attrs, debug) {
    this.attrs = attrs
    this.debug = debug
    this.value = this.compute()
  }

earlonrails

#!/usr/bin/env node
// Question found here:
// https://stackoverflow.com/questions/32527026/shortest-path-in-javascript
// Based on the first accepted answer
"use strict"

const expect = require('expect.js')
class Graph {
  constructor(props) {
    this.neighbors = {}

earlonrails

#!/usr/bin/env node
"use strict"
const expect = require('expect.js')

class MergeSort {
  static sort(array) {
    let mid = array.length / 2
    let left = array.slice(0, mid)
    let right = array.slice(mid)

earlonrails

#!/usr/bin/env node
"use strict"

const expect = require('expect.js')
const coinTypes = {
  "0.01": "Pennies",
  "0.05": "Nickels",
  "0.10": "Dimes",
  "0.25": "Quarters",
  "0.50": "Quarters",

earlonrails

#!/usr/bin/env node
"use strict"

const expect = require('expect.js')

class Merkle {
  constructor(array) {
    this.key = array.join('')
    this.left = null
    this.right = null

earlonrails

#!/usr/bin/env node
"use strict"

function throttle(fn, limitInMs) {
    var count = 0;

    return function () {
        var context = this, args = arguments;
        console.log("waiting: ", limitInMs * count, "ms")
        setTimeout(function () {

earlonrails

#!/usr/bin/env node
"use strict"

// Write a function that receives a position in 2 dimensional (x,y) array, which was initially initialized with 'o' (signals "water"), the function changes the value/state of that position to 'x' (signals "land") and returns the number of isles in the board.
// For example, for 3x3 board, it will initially look like the following:
// o o o
// o o o
// o o o
// After calling the function with the position (1,2), the board will look like the following:
// o o x

earlonrails

#!/usr/bin/env node
"use strict"

class Quicksort extends Array {
  // swap the value in the leftIdx with the value in the rightIdx
  swap(leftIdx, rightIdx) {
    let old = this[leftIdx]
    this[leftIdx] = this[rightIdx]
    this[rightIdx] = old
  }

earlonrails

#!/usr/bin/env node
"use strict"

class CircularArray {
  constructor(n, k, q, arr, debug = false) {
    this.n = n      // number of integers
    this.k = k      // rotations
    this.q = q      // queries
    this.arr = arr
    this.debug = debug

earlonrails

#!/usr/bin/env node
"use strict"

// https://www.careercup.com/question?id=5663127975755776
// Find all comments in the Java (it could be Python or any other language of your choice) codes that’s parsed in as a string.
// You may assume the codes given is valid.

// Input is a single string, e.g.
// String codes =
// “/* file created by aonecode.com\\n” +