algo_update.js

const [amount] = process.argv.slice(2);

function getChange(given, denominations = [10, 5, 2]) {
  if (!given || given === 0) {
    return [];
  }

  let minChange = Infinity;
  let minChangeArr;
  for (const coin of denominations) {
    if (coin > given) {
      continue;
    }
    const change = getChange(given - coin, denominations);
    if (change && change.length + 1 < minChange) {
      minChange = change.length + 1;
      minChangeArr = change.concat(coin);
    }
  }
  return minChangeArr?.reverse();
}

console.log(getChange(amount));