Loading collection data...
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.
D translation
(author is inactive)
Java: No random tests.
JS translation available.
I think you should state if modifications to the input array are allowed, i.e. returning the same array instead of creating a new one.