4skinSkywalker

function pivotHelper(array, start = 0, end = array.length) {
    let pivotValue = array[start]
    let pivotIndex = start
    for (let i = start + 1; i < end; i++) {
        if (pivotValue >= array[i]) {
            pivotIndex++
            [array[pivotIndex], array[i]] = [array[i], array[pivotIndex]]
        }
    }

4skinSkywalker

function mergeSort(array) {
    for (var b = 1; b < array.length; b *= 2) {

        let a = []
        for (var i = 0; i < array.length; i += 2 * b) {
            
            a = a.concat(
                merger(
                    array.slice(i, i + b),
                    array.slice(i + b, i + 2 * b)

4skinSkywalker

function insertionSort(array) {
    for (var i = 1; i < array.length; i++) {
        for (var j = i; j > 0 && !(array[j] > array[j - 1]); j--) {
            if (array[j] < array[j - 1]) {
                [array[j - 1], array[j]] = [array[j], array[j - 1]]
            }
        }
    }

    return array

4skinSkywalker

function selectionSort(array) {
    for (var i = 0; i < array.length - 1; i++) {

        let vMin = array[i]
        let iMin = i
        for (var j = i + 1; j < array.length; j++) {
            if (vMin > array[j]) {
                vMin = array[j]
                iMin = j
            }

4skinSkywalker

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

    return array

4skinSkywalker

function countdown(num) {

    let array = []

    function helperRecursive(n) {

        array.push(n)

        if (n === 0) return
        

4skinSkywalker

function fact(n) {
  if (n === 1)
    return 1
  
  return n * fact(n - 1)
}

4skinSkywalker

function recursive(n) {
  if (n === 0)
    return
  // recursive call with same input
  recursive(n)
}

4skinSkywalker

function recursive(n) {
  // missing return inside Base Case
  if (n === 0)
    console.log(n)
  recursive(n - 1)
}

4skinSkywalker

function recursive(n) {
  // missing Base Case
  recursive(n - 1)
}