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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 Java version of this kata used to pass arrays containing duplicates, which are forbidden by the kata description. now that it has been fixed, this solution passes the kata.
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