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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 know and I am waiting for a mod to change the test code.
This solution doesn't work if there are duplicates. For instance, if word = 'SoS', then capitals(word) == [0, 0].