i dont even know what filtering function is

Agreed: filter lies in the paradigm of functional programming, and the proposed answers relies on count to keep some permanent state (in fact, modifying c counter, while filter does the looping).

So, while I find it clever, this solution is not easy to understand.

IMO this solution, while it works and short, is not a good practice:
the filtering function has its side effect (actually, that's the reason it works).
I think that filtering functions should not have side effects, so that we can move them around the code and reused them elsewhere.

This is the best solution i've seen so far.

Beautiful code

Awesome. I really appreciate your feedback.

very good solution

Ty very much :P

Fixed a typo ("repating" instead of "repeating") and added the small clause "in the same order that they were provided to you": when this will become a popular kata, trust me that otherwise there will be people asking you about that, maybe because they used some convoluted algo with sets or the like :D

That said, to me it is absolutely fine now and in a few more upvotes it is ready to be green-lit into an approved kata.

Ty, very much I know that. I'm new to programming so yeah but I can understand what you did

I hope now it is fine.

Ty, and yes I will change discription to be clearer. :)