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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 do not get this solution man, can you explain?
& in this code is a bitwise operator that looks up the lowest bit of a and compare with 1?
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