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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.
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Your make it a math problem.
Very smart. How long did you spend on thinking of this solution?
Why would you walk in a circle if you end up in the same place?
Imagine you are walking down helix stairs, you need to walk in a circle to get down.
Check out the default parameter of split function,
then you will know.