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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.
duplicate and more katas, should be unpublished ~~
would needs random tests! (even for a duplicate... ;) )
For Java, method should be called
rotateinstead ofRotateHi and welcome;-), i see it's your first published kata, but it's a duplicate. There are many others like this, so you should search similar or same katas before publishing (look for "rotate matrix")... So you should change something to solve this "issue"... By the way, no random tests...