Thread: Ninja's Software Challenge

I'll take care of the two easiest and leave the rest for ye who hath more time on thy hands.

Spoiler for 1:

1. This isn't a task for a lower level language when you could just do

Code:

sed -e 's#\\#/#'

Wrap it in system() if you'd like.

Spoiler for 2:

2. The mathematical solution runs in constant time

Code:

int f(int n) { return (n + 1) * n / 2; }