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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.
Hi!
The random test cases do use very large arrays to test if the solution is efficient enough. If your code passes the initial tests and times out during the random ones, then it just means that your code is running slightly too slow. It isn't bad or broken at all, but you just need to rethink if you can make some parts faster.