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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 main target of additional task here is not to make you use other control flow statement but to make you think if you can solve the task without direct flow control, I suppose.