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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.
The SQL top solution isn't recursive isn't it? Testing suite should be revised.
I think you're talking about SQL, rank is shared amongst all languages, can't be changed and in no way it is 5 kyu in those other languages.
How's this 7 kyu in SQL, lol?
Doesn't work with special characters.