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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.
Always use curly braces on if statements for readability and maintainability.
Do not use toCharArray(), it causes the string to be copied, where a copy is not necessary.