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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.
I realize whats wrong in my interpeter and why many of people get random errors in tests.
Loop in testing interpreter is afterconditional. This part is not described clearly. I like preconditional loop because it is more useful in real life.
array can has not numeric indexes and skipped indexes.