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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.
The instructions should be clear that a sequence of "1111" counts as a triple. The same for "111" counts as double.
I think this solution is the most grokable. It doesn't require understanding many enumerable methods. Plus, your's reads better than mine while reducing a variable.
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