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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.
Doh, you're right. Sorry - didn't realize the version wouldn't update automatically.
First attempt at passing in JS just now failed on small random test, one single point of failure and rest of test cases passed. Passed on second attempt through random tests.
Expected 3 to equal -1.