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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.
if staring at the Input and Output, you will find the problem will be resolved soonly.
This solution is so cooool!
A little hard for me to limit the code in 120 :<
Awesome,thanks for sharing!