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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 think it depends on the coding language. As far as I can tell python was pretty easy. C# was way to hard with its datatype iEnumerable. I wasn't able to solve it within 15 minutes even after googling after this datatype. Just an array of strings whould have been more apropriated for 8.Kyu
lol... this is kyu 8? ridiculous hard...