Good point. Fixed. Thanks.

Is the amount of people passing a kata a good metric of its clarity?
Then what about the more than 25000 that did not pass it?

IMHO not a good percentage for a 5kyu kata which, as others already mentioned, is probably more of a 6kyu one.

Sorry to enter your nonsense "clarity metrics" discussion, I was trying to help in the first place.

Although the intention is clear, I think the drawing is geometrically wrong and should be fixed so the sentence "disposed in the same manner as in the drawing" makes any sense. The big pink square with side length 8 should be on the left of the others to follow the pattern of a geometrical spiral. Otherwise there's no recognisable pattern to understand what "the same manner" is.

Typo: this days

Haskell translation added!

Please review and approve :-)

That or he gets paid by lines of code.

I specially like the break after the return true line... xD

Awesome!

Thanks for your feedback.
The kata is intentionally easy, even if you don't use Date. Limiting to years 1900-2099 allows an easy arithmetic solution, as you can see by others.

I like your idea for a second version of the kata working for all years.

34 not required 😅

Thanks for reporting!

Fixed :-)

PHP translation

Please check and approve! :-)

Then you're no longer using the array as a stack, which was the proposal in the first place :-)

Expected and actual are the other way round, which is confusing until you realize.