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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.
I see. Do you have a link I could look at? I understand the concept but I'm not sure how that would work or be implemented.
Added some random tests.
Difficulty is 5 kyu or 6 kyu.
Adding a sample test would make this easier to understand. Otherwise it's a good kata.
The spec for this kata is described terribly. I came up with 6 completely different solutions that can be interpreted as the answer, before finding the right interpretation.