OneCent01

var getCurrentRow = function(board, row, col) {
  return board[row];
};

var getCurrentCol = function(board, row, col) {
  var flatCol = [];
  board.forEach(function(row) {
    flatCol.push(row[col]);
    return row;
  });

OneCent01

var sortedIndex = function (array, value) {
  var low = 0,
  high = array.length;
  while (low < high) {
    var mid = (low + high) >>> 1;
    if (array[mid] < value) low = mid + 1;
    else high = mid;
  }
  return low;
};

OneCent01

function Person() {

  if(typeof Person.instance === 'object')
    return Person.instance;

  Person.instance = this;

  return this;
}

OneCent01

const countSubstringOccurrances = function(string, query) {
  let count = 0;
  while(string.includes(query)) {
    count++;
    let index = string.indexOf(query);
    string = string.slice(-(string.length-1-string.indexOf(query)));
  }
  return count;
};
  

OneCent01

function diagonal(matrix) {
  let row = matrix.length - 1;
  let col = matrix[row] ? matrix[row].length - 1 : null;
  let matrixDiagonal = [matrix[row][col]];
  let count = 0;
  while(row !== 0 || col !== 0) {
    if(!matrix[row+1] || !matrix[row+1][col-1]) {
      row -= count;
      col += count;
      count = 0;

OneCent01

const assert = function (condition, message) {
  console.assert.apply(console, arguments);
  typeof message === 'string' && condition ? 
    console.log('✔ ' + message) :
    console.log('✖ ' + message);
};
const test = () => {
  //assert(condition, message); example: 
  //assert(2 > 0, 'Two should be greater than zero!');
};

OneCent01

String.prototype.hashCode = function(max){
  var hash = 0;
  if (!this.length) return hash;
  for (i = 0; i < this.length; i++) {
    char = this.charCodeAt(i);
    hash = ((hash<<5)-hash)+char;
    hash = hash & hash; // Convert to 32bit integer
  }
  return Math.abs(max?hash%max:hash);
};

OneCent01

const hasLessThanTwoEdits = (string1, string2) => {
  if(string1.length - string2.length > 1) {
    return false;
  }
  let changes = 0;
  (string1.length >= string2.length ? string1 : string2).split('').forEach((char, i) => { string1[i] !== string2[i] ? changes++ : null });
  return changes < 2;
};

OneCent01

const isPalindrome = (string1, string2) => {
  if(string1.length !== string2.length) {
    return false;
  }
  let stringChars = string1.split('').reduce((acc, char) => {
    acc[char] ? acc[char]++ : acc[char] = 1;
    return acc;
  }, {});
  let string2chars = string2.split('').reduce((acc, char) => {
    acc[char] ? acc[char]++ : acc[char] = 1;

OneCent01

const urlify = (string) => {
  return string.split('').reduce((acc, char, i, array) => {
    if(char === ' ') {
      return acc += array[i+1] === ' ' || !array[i+1] ? '' : '%20';
    } else {
      return acc += char;
    }
  }, '');
};