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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.
No problem.
He (or she) works in C++, but still, should print the input to debug his/her code. Not a kata issue. Read this: https://docs.codewars.com/training/troubleshooting#print-input
It fails with inputs like this:
{ 1, 2, 2 }the expected value is -1 and it returns 1.Use a console.log statement to print the input arrays