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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.
fixed...
I don't know how that translation got approved, I'll look into it.
what language
For unknown reasons someone removed the keyword static from "public static string vowels (string input, string output)" in the initial solution.
I added it back in.