Many Thanks. I tried returning an empty array earlier, but i might have done a mistake. Now it works. Also thanks for the markdown link :)

I have to say i am a bit lost here. I try the kata in Java. After some research i found out that there is something called default method. But i still don't know how i should actually start to code it or even how i should use the default in the first place.
Maybe some explanation about the method and how it works might be a good idea?
If you didn't guess. I am pretty much a total beginner.

Thanks, this did the trickt! :)

That is exactly the problem. That (i think) my solutions are correct, but the random test always failes.