fazeelanizam13

//test cases
let tests = [
  {
    input: 3,
    result: 'Please input an array of integers.'
  },
  {
    input: '[]',
    result: 'Please input an array of integers.'
  },

fazeelanizam13

function countCharOccurances (text, character) {
  // convert input to string and split the string into an array of charaters
  let chars = String(text).split("")

  // if doesn't include, return 0
  if (!chars.includes(String(character))) {
    return 0
  } else {
    let count = 0
    

fazeelanizam13

function firstUniqueCharacter(text) {
  // split string into single characters
  let characters = String(text).split("")

  if (characters.length < 1) return 'Please input a non-empty string'

  // iterate through array, comparing each character to the rest

  // if found no match for a certain character after comparing to all other characters, return character at the end of first such iteration

fazeelanizam13

function swapWithoutThirdVariable({ firstNo, secondNo }) {
  // if either of two input numbers don't pass as integers, return error
  if (!Number.isInteger(firstNo) || !Number.isInteger(secondNo)) {
    return 'Please input two integers for both "firstNo" and "secondNo"'
  }

  // first number is sum of two numbers
  firstNo = firstNo + secondNo

  // get first number again afer subtracting the second number from sum (firstNo)

fazeelanizam13

// validate input array elements
function isIntegerArray (input) {
  // if an array
  if (Array.isArray(input)) {
    // if empty array
    if (input.length < 1) return false

    // iterate through each element and return false if one of them happens to be not an integer
    for (let i = 0; i < input.length; i++) {
      if (Number.isInteger(input[i])) continue

fazeelanizam13

// validate input array elements
function isIntegerArray (input) {
  // if an array
  if (Array.isArray(input)) {
    // if empty array
    if (input.length < 1) return false

    // iterate through each element and return false if one of them happens to be not an integer
    for (let i = 0; i < input.length; i++) {
      if (Number.isInteger(input[i])) continue

fazeelanizam13

// validate input array elements
function isIntegerArray (input) {
  // if an array
  if (Array.isArray(input)) {
    // if empty array
    if (input.length < 1) return false

    // iterate through each element and return false if one of them happens to be not an integer
    for (let i = 0; i < input.length; i++) {
      if (Number.isInteger(input[i])) continue

fazeelanizam13

// validate input array elements
function isIntegerArray (input) {
  // if an array
  if (Array.isArray(input)) {
    // if empty array
    if (input.length < 1) return false

    // iterate through each element and return false if one of them happens to be not an integer
    for (let i = 0; i < input.length; i++) {
      if (Number.isInteger(input[i])) continue

fazeelanizam13

// assumption - each input would have exactly one solution, and the same element may not be used twice in the input array

// brute force solution
function twoSumNaive(array, sum) {
  let indices = []

  for (let i = 0; i < array.length; i++) {
    for (let j = i + 1; j < array.length; j++) {
      if (array[i] + array[j] === sum) {
        indices.push(i)

fazeelanizam13

const hashFunction = (key, tableSize) => {
  // index we are going to return
  let index = 0

  // get list of characters in key string as an array
  let numChars = String(key)
  
  // assign numChars size to index to start
  index = numChars.length