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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
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.
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!