take any non-negative integer as an argument and return it with its digits in descending order. Essentially, rearrange the digits to create the highest possible number.

returnDescendingOrder.js

//this is an example integer
const myInt = 52132;

function descendingOrder(n) {
  if (n > -1) {
    let toArr = Array.from(String(n), Number);
    let sorted = toArr.sort((a, b) => a - b).reverse();
    let joined = sorted.join("");
    return parseInt(joined);
  }
}

descendingOrder(myInt); //this will return '53221'