JavaScript QuickSort

QuickSort.js

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

  const pivot = arr[~~(0 + Math.random() * arr.length)];

  return [
    ...quickSort(arr.filter(v => v < pivot)),
    ...arr.filter(v => v === pivot),
    ...quickSort(arr.filter(v => v > pivot)),
  ];
}