JSFiddle - React, Tailwind, and code Playground

JavaScript

function solve(arr){
  var descArr = [];
  var ascArr = [];

  ascArr = arr.sort(function(a, b) {
  	return a - b;
  });

  descArr = arr.sort(function(a, b) {
  	return b - a;
  });

  console.log(descArr);
  console.log(ascArr);

};

solve([15,11,10,7,12])