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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.
Programming isn't just about coding, but also logical thinking, I've lost a good time on this kata, but it was worth it, now I'll think and try to recognize patterns before jumping right in. this is a hard, good and essencial kata for begginers
Which language? What input/expected value? What do you think it should return instead?