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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.
I am a bit confused. I am submitting my solution but recive the following:
Expected
: -3,-3,-2,-2,-1,-1,0,0,1,1,3,4,4,5,5,7,8,8,9,9,10,10,11,11,14,15,15,17,18,18,19,19,20,20
to equal
: -6,-3-1,3-5,7-11,14,15,17-20
-6 is not on the list to begin with. How could it be equal to the expected output?
seriously? this is awesome! :)