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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 feel like the real problem is the random test generator is not really testing for much. my solution was passing all the random tests everytime and still failing 2-3 of the specific tests.
Just a thought