return String(result.dropLast()) гарантирует, что в конечном результате нет лишних пробелов после последнего символа в строке.

could you elaborate?

Yes, you are right. The description and the solution covers only the years and centuries AD.

The century 1 contains the years 1, 2, ... 100 AD. The description does not specify the format of years BCE or centuries BCE. Some notations are "-1", "1 B.C.", "1 BC" or "1 BCE". A correct solution without a description of the year/century format is not possible.

That's all very neat, but doesn't work for ages BCE.

Like for Sprache :)

😆😆😆😆😆😆

Fixed.

Wow I didn't know what a deque was, I'm guessing it's some sort of a circular list?

You're right, basically just figured out how to do the workaround. :D It's a bug, one way or the other.

COBOL translation (author gone).

I don't understand. Tests seem to use Int64 everywhere. This is a bug and fixing it is not part of the challenge, it's an error. In the new version I published I think there should be no problem anymore (though I'm not sure).

I published a new fork trying to fix the issue: https://www.codewars.com/kumite/58a7121f934f82e1840002d5?sel=6269813b8a33fe3f0fada8c5

I just replaced Long with Int64 in the solution set up. I think it may be enough but I'm not comfortable with Swift so someone more competent should review it and approve if it's ok.