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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.
This kata has been out of beta for well over 8 years at this point.
How would you make a pair with odd amount of elements?
It clearly states in description that only even lengths will be tested, and it would be too late to change requirements now (even if was a valid change).
Could you add some test cases including an array with odd length?
Test cases are missing for js