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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.
I enjoyed this one - thank you for this and for the whole series.
Enjoyable parsing - actually found this easier than dealing with the backspaces in #1.
This code should not be necessary given we are told in the problem statement that the input is a string.