NoZerosForHeros.js

/**
 *
 * Description:
 *
 * Numbers ending with zeros are boring.
 *
 * They might be fun in your world, but not here.
 *
 * Get rid of them. Only the ending ones.
 *
 * 1450 -> 145
 * 960000 -> 96
 * 1050 -> 105
 * -1050 -> -105
 *
 * Zero alone is fine, don't worry about it. Poor guy anyway
 *
 * Kata URL:  https://www.codewars.com/kata/570a6a46455d08ff8d001002
 *
 * @param {*} n
 */

function noBoringZeros(n) {
  let numArray = Array.from(String(n), Number);
  let counter = 0;
  let result = "";
  if (n === 0) {
    return 0;
  }

  for (let i = numArray.length - 1; i >= 0; i--) {
    if (numArray[i] !== 0) {
      counter = i;
      break;
    }
  }

  for (let i = 0; i <= counter; i++) {
    result += numArray[i];
  }
  return result;
}

console.log(noBoringZeros(9500200021510000));