Sorting data in ascending and descending order

JavaScript
4

To reverse the sort order just multiply the return value of the comparator function by -1.
Or add another parameter into the comparator function 1 for normal sort and -1 for reverse sort

const comparator = (a, b, c) => {
  if (a < b) return -1 * c
  if (a > b) return 1 * c
  return 0 // stay where you are
}