SPOILER! Factorialize a Number

JavaScript
1

Hello, I was wondering if this code is any different from the answer provided by FCC. Is there any difference or benefits writing it the way FCC did, or is mine fine as well?

This is the FCC answer, my answer is after this:

function factorialize(num) {
  if (num === 0) { return 1; }
  return num * factorialize(num-1);
}

Your code so far


function factorialize(num) {
  if (num!==0) {
    return num*factorialize(num-1);
  }
  else {
    return 1;
  }
}

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36.

Link to the challenge:

2

no difference.

if num !== 0 the lines will just get stepped over

3

Thanks for clarifying ^^

4

Normally, if you write anything recursive there is a convention that you need to declare ‘exit condition’ at the start. Considering this, FCC code is more correct

1 Like
5

Ahh I see! Thanks so much, I will take note of that :smile: