Amazing!!

Great workings!

there are many ways to slove this without regex

So simple, I managed to figure out that a regex would work but the experience really plays a role here, great job. Teahcing us all a lot.

can you recommend good resources to learn it?? it looks so hard lol

Why are people so afraid of regex.. It's an awesome tool.

it can easily be done without regex

so there is no way to solve that kata without Regex?
that's not supposed to be on level 7

That because the pattern is strongly checking for only digit (0 - 9) nothing else

it was such obvious, but I didn't guess to this solution :(

Now he is Programmer 100k $

genious

I learned so much with this kata is impressive!

My god..

I loved your code very simple and effective, I think learn regEx is neccesary and essential