pop vs index during recursion

Benchmark created on July 28, 2011

Preparation HTML

<script>
  var arr1 = [2, 3, 4, 5];
  var arr2 = [4, 3, 3, 1];
  var res = 0;
  
  function sumPop(array1, array2) {
    if (array1.length) return array1.pop() * array2.pop() + sumPop(array1, array2);
    return 0;
  }
  
  function sumI(array1, array2, i, len, undefined) {
    if (i === len) return 0; else return array1[i] * array2[i] + sumI(array1, array2, ++i, len);
  }
</script>

Test runner

res = sumPop(arr1, arr2);

res = sumI(arr1, arr2, 0, arr1.length);

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.

• Revision 1: published on July 28, 2011