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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 exited every time I'm able to look at other people solutions on here, sometimes I spend hours testing other people code and mession around with it, such a grate opportunity.
I felt the exact same way! After submitting my solution (which had taken several hours) triumphantly, I stared in disbelief at the one-liner at the top. And as well as scrolling through all of the other simpler solutions.
You're welcome.