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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.
Codewars is also here to showcase actual best practices and this is one of the rare cases where the votes match.
Actually, it really may not compile due to project style violation rule like 'do not use single char names outside of lambdas'
(see lint)
So in a java project,this code won't compile?