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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.
I'm getting a "error: cannot find symbol assertEquals" error when running in Java, but the code works fine in Eclipse. I'm using a recursive solution and a function outside the persistence function to obtain the counter variable, could that be the problem?