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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.
Okay, I read the description a hundred times. Correct me if I'm wrong. We have a string, and we need to find out if, by taking any note from the string, it is possible to create a melody that matches the pattern 2212221?
approved
same, I suppose it's a bug
Approved. Thanks ;-)
Glad you liked it
Thank you for reporting, I have fixed the tests (see my other reply for some details). Please try again, it should work now.