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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.
Inheritance issue is annoying and not explained well.
Agreed.
Think you've got an error in your test cases. I used puts to print out the contents of the input and the expected value in the test case doesn't match the algorithm as described.
There's an 'A' in the input, but the expected return value starts with a 0, which is incorrect unless I've read the description wrong.
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