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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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Nope. They're included.
I noticced that for ruby it's flipped, correcting.
test should check whether the numbers are power of 4 , divisible by 4 musn't be enough to pass all test, please check your tests or change the kata description.
Why don't you fix the issue?
your submit test #9 is faulty. Please fix or remove it
you don't include 49 and 9