factorial iterative

factorialIterative.js

function factorial(n) {
  let answer = 1;
  if (n == 0 || n == 1) {
    return answer;
  } else {
    for (var i = n; i >= 1; i--) {
      console.log("running"); // should log 5 times
      answer = answer * i;
    }
    return answer;
  }
}

console.log(factorial(5)); // 5*4*3*2*1 = 120