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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.
After benchmarking most of the top answers, this is the winner as far as performance!
The example expects a camelCase string. If it were to include Pascal-Case or any string as inputs I would agree with you.