https://practice.geeksforgeeks.org/problems/largest-number-formed-from-an-array/0

largest-number-formed-from-an-array.js

// https://practice.geeksforgeeks.org/problems/largest-number-formed-from-an-array/0
function generateLargestNumber(arr) {
  const resStr = arr.sort((a,b) => {
    const ab = `${a}${b}`;
    const ba = `${b}${a}`;
    return ab === ba ? 0 : ab > ba ? -1 : 1;
  }).reduce((acc, num) => {
    return `${acc}${num}`;
  }, '');
  return parseInt(resStr, 10);
}
const nums1 = [3,30,34,5,9];
const result1 = generateLargestNumber(nums1);
console.log(result1, result1 === 9534330);
const nums2 = [54,546,548,60];
const result2 = generateLargestNumber(nums2);
console.log(result2, result2 === 6054854654);