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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.
No, you have the correct complexity. Perhaps tweak your solution a bit and reduce overhead?
This puzzle is throwing me a bit, any hints?
Very Nice Kata. Is easy if one just reads the instructions.
Was a great kata, looking forward to your others.