juanigallo

function checkSum(arr, sum) {
	let low = 0,
	  high = arr.length - 1;

	while(low < high) {
	  let s = arr[low] + arr[high];

		if (s === sum) return true
		if (s < sum) {
			low = low + 1

juanigallo

function fizzBuzz(to) {
  for (var i=1; i <= to; i++) {
    if (i % 15 == 0)
      console.log("FizzBuzz");
    else if (i % 3 == 0)
      console.log("Fizz");
    else if (i % 5 == 0)
      console.log("Buzz");
    else
      console.log(i);

juanigallo

function mergeSort (arr) {
  if (arr.length < 2) {
    return arr;
  }

  var mid = Math.floor(arr.length / 2);
  var subLeft = mergeSort(arr.slice(0, mid));
  var subRight = mergeSort(arr.slice(mid));

  return merge(subLeft, subRight);

juanigallo

var quickSort = function(array, left, right){

  var leftIndex = partition(array, left, right);

  if (left < leftIndex - 1){
    quickSort(array, left, leftIndex-1);
  }
  
  if (right > leftIndex){
    quickSort(array, leftIndex, right);

juanigallo

function bubbleSort(arr) {
  for (var i = 0; i < arr.length - 1; i++) {
    for(var j = 0; j < arr.length - i - 1; j++ ) {
      if (arr[j] > arr[j + 1]) {
	var temp = arr[j];
  	arr[j] = arr[j + 1];
  	arr[j + 1] = temp;
      }
    }
  }