function countSwaps(a) {
  let cnt = 0;
  let answer = a;
  for (let i = 0; i < a.length - 1; i++) {
    for (let j = 0; j < a.length - i - 1; j++) {
      if (a[j] > a[j + 1]) {
        cnt++;
        [a[j], a[j + 1]] = [a[j + 1], a[j]];
      }
    }
  }
  console.log(`Array is sorted in ${cnt} swaps.`);
  console.log(`First Element: ${answer[0]}`);
  console.log(`Last Element: ${answer[answer.length - 1]}`);
}

function solution(numbers) {
  let arr = numbers.map((num) => num.toString());
  arr.sort((a, b) => b + a - (a + b)).join("");
  return arr[0] === "0" ? "0" : arr.join("");
}