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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.
Small issue:
A typo error in the sample test. The pony 'g' should be replaced with the correct pony name.
More random tests (30-50 of them considering the nature of the kata) preferably with random lengths are highly recommended.
I think i have seen a kata like this. Please check
A simple trivial map/filter/reduce algo lacks any novelty and has already been overdone.
No random tests.
Solution is in the set-up.