<script>
  /* recursive */
  
  function factorial_rec(n) {
   if (n) {
    return n * factorial_rec(n - 1);
   }
   return 1;
  }
  
  /* tail recursive */
  
  function factorial_tailrec(n, res) {
   if (n) {
    return factorial_tailrec(n - 1, n * res);
   }
   return res;
  }
  
  /* iterative */
  
  function factorial_iter(n) {
   var res = n;
   while (--n) {
    res = n * res;
   }
   return res;
  }
</script>

Setup JS

Teardown JS

Test cases

Test #1

Title *

Async

Code *factorial_rec(50)

Test #2

Title *

Async

Code *factorial_tailrec(50, 1)

Test #3

Title *

Async

Code *factorial_iter(50)

Test case details

Preparation Code

Test cases

Test #1

Test #2

Test #3