RadixSort.js

/*
* Radix sorts an integer array without comparing the integers.
* It groups the integers by their digits which share the same
* significant position.
* For more information see: https://en.wikipedia.org/wiki/Radix_sort
*/
function radixSort (items, RADIX) {
  // default radix is then because we usually count to base 10
  if (RADIX === undefined || RADIX < 1) {
    RADIX = 10
  }

  var maxLength = false
  var placement = 1

  while (!maxLength) {
    maxLength = true
    var buckets = []

    for (var i = 0; i < RADIX; i++) {
      buckets.push([])
    }

    for (var j = 0; j < items.length; j++) {
      var tmp = items[j] / placement
      buckets[Math.floor(tmp % RADIX)].push(items[j])
      if (maxLength && tmp > 0) {
        maxLength = false
      }
    }

    var a = 0
    for (var b = 0; b < RADIX; b++) {
      var buck = buckets[b]
      for (var k = 0; k < buck.length; k++) {
        items[a] = buck[k]
        a++
      }
    }
    placement *= RADIX
  }
  return items
}

// Implementation of radixSort

var ar = [5, 6, 7, 8, 1, 2, 12, 14]
// Array before Sort
console.log(ar)
radixSort(ar)
// Array after sort
console.log(ar)