DescendingOrder.js

// Your task is to make a function that can 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.

// Examples:
// Input: 42145 Output: 54421

// Input: 145263 Output: 654321

// Input: 123456789 Output: 987654321

function descendingOrder(n){

  return Number(n.toString().split('').sort((a, b) => b - a).join(''))
          
}

//different approach

function descendingOrder(n){
  return parseInt(String(n).split('').sort().reverse().join(''))
}