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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.
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this is similar to what I did, but looking back using stringbuilder could have saved some itme
just a though, but it's interesting there is a class and there are no random tests
I tried making a faster version, but yours is faster than everythng I tried. Congrats