Hi,

• no sample tests
• no random tests
• the task is very artifical (to the point it doesn't have any interest anymore, imo)

If you're interested in authroing kata, you should read the docs about that before your next try.

Cheers

Duplicate of https://www.codewars.com/kata/586beb5ba44cfc44ed0006c3 with just an additional filter that doesn't really add anything unique to it.