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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.
Looks like some issues are there with the instruction / test cases.
For the same code the number of test case pass/fail is different .
Recorded the screen, check the video https://streamable.com/qf2yn9 (P.S. The code is not visible in the video)