Very cool. Comments would make this quicker to read but it is a flexible solution. More

This is clear to read and succinct. I considered recursion and didn't apply it as I thought about the problem the wrong way to start. Very nice! More

Clear and easy to follow. Recursion would be a more slick way to solve and more extensible to larger values later. Yours is better than my first one for sure. More

Wow. This solution makes me jealous! Very cool and extremely readable. More