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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.
Using "switch-case" will faster the operation and the time it takes to execute the script. For example, when the operation is "/", it will traverse all if-else, which is unnecessary and can be avoided by using "switch-case".
"break" is not needed when "return" is used.