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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 random test for this kata are flawed, at least in JavaScript. They want returned numbers that aren't even in the original arrays when you console.log. I can get the answer that it says is correct, but it is absolutely NOT correct. The JavaScript part for this should be pulled until it is fixed. Someone else has noted this about 10 months ago and it still isn't fixed.
It's still flawed. It's still doing the same thing.
This is not a level 7. It should be a level 6 at the lowest.
Instructions say to check for active students. IsActive is a boolean value per the description. Unfortunately, you can't simply test for true or false in the standard way. Flawed kata. Should either be reworked or removed.