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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.
Your random tests just don't work
Tests 0,0,1,1 ==> 3
✘ Expected: 12, instead got: 3
3 is clearly correct, the test expects the wrong number. It would be great, if you could fix or let me fix that.
You have a error for JS
Tests 1,0,1,0 ==> 10
✘ Expected: 5, instead got: 10