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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.
This is very language dependent.
Added test.
Definitely a level 8
Using if statements is level 7. It's great that you don't find it a challenge, but the kata is appropriate for level 8 "Defining a simple function (i.e. hello world)."