Ohhh i see, i think you should include to the istructions that you can not change the initial array.

I think there is a mistake in this kata. When attempting the test, it says that my solution is wrong because i should return a cascade of three elements. However, if you print list to see the input received, you can see that the list received has only one element and you are ask to reuturn a set of three.

Thanks for bringing this up; the Description has been updated with a warning about mutating the input.

I checked earlier comments. Yes, you cannot destroy the arr when solving the kata, because otherwise the random tests won't work. :)

Great Kata, i enjoyd a lot. However, i think you have to add as an instruction that you can not destroy the map when solving the kata. Otherwise advance test wont make it through.

Anyway it was great fun!