Too bad, I thought I looked through all the similar katas, thanks.

Hi,

Unfortunately, that's a duplicate: https://www.codewars.com/kata/5680e56f4797a55076000044
Morover, no random tests.

You should unpublish it.

Cheers

Edit: 'just forgot... If you're interested in authoring kata, you should read the whole documentation about it: https://docs.codewars.com/authoring/guidelines/kata

No random tests.

Fun kata. I initially ranked it as a 7kyu, but after looking at other solutions and seeing how others seem to be solving it, I think that many will choose to solve this in a more complicated fashion, making it a 6kyu.