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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.
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I want to know what does [3, 3, 0, 1][cakes % 4] means??
WOW~ although it is long and not clever solution , but this kata really help me to know more about how to make the structure that the count will move forward or move backward.