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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.
JS Node 18. should be enabled
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C translation
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If user modifies arr, random tests fail with wrong expected values. (Specifically, if user empties arr, expected value will be [].)
Either give user a copy of your own arr, or return a better error message. Maybe even explicitly test for not modifying the input? (It's good programming!)
If you don't know what's happening, the current situation is somewhere between perplexing and frustrating.