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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.
You use something what carries over state between consecutive invocations of test function, for example static , or, in some languages, global variables.
The input string will only consist of lower case letters and/or spaces.