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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 enjoyed this kata, but I can't submit it. I checked if my code is correct and it's ok. When I run tests or try to attempt, I had output that test are passed, but Passed: 0 Failed: 0 and nothing more happend. What's wrong?