I've had great success with this solution: for (size_t i = n; i > 0; ) { i--; ... } I'd have gone with "i-- > 0" if I wasn't feeling o

I've had great success with this solution: for (size_t i = n; i > 0; ) { i--; ... } I'd have gone with "i-- > 0" if I wasn't feeling out the consequences of trying to avoid all integer overflow, though.