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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.
Thank you for the feedback! I will definitely refactor this.
You're doing a lot of work to get the correct index for your array. Since you know the string's length is going to be even, could you try to make the step in your loop i + 2, rather than i++?