Even if it's just 20 minutes, 20 minutes every time I want to file an app?

The one I see there "first non-repeated character" does not look like a 20 minute deal.

It's 20 minutes because it's for an application. I want to look through it before I submit it, not just slap something down. I actually ended up doing this one just because it was so trivial.

If I were applying I would send them my 1-minute solution, because I wouldn't want them to think it took me 20 minutes to solve.