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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.
Thanks :) I figured out a solution in the end.
I have cleared the 3 tests that I can see but it is saying that a 4th test is expecting to return 45 but no idea what the input was to check against it. Any ideas how to fix this?