Function duplicateZeros

JavaScript/Duplicate-Zeroes.js:24–33

(arr)

*/

var duplicateZeros = function (arr) {
  let len = arr.length;
  for (let i = 0; i < len; i++) {
    if (arr[i] == 0) {
      arr.splice(i + 1, 0, 0);
      i++;
    }
  }
  arr.splice(len);
};