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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.
Cool! seems like you figured it out! i remember being pretty happy with this solution at the time. It's a really nice kata i think because you can solve it with very little code if you manipulate the data structure (array) in clever ways.
data structures > code
happy coding!
hats off dude