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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 sample tests
JS Node 12. should be enabled
Test cases could have included more fixed tests and especially random tests - keep that in mind when authoring future Kata :)