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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.
1 would be the correct answer for this one. This is because at position 1 the left side {2824} and the right side {-1490, -9084, -9696, 23094} both equal 2824 when added together. If you are still confused, let me know.
Maybe I don't understand the task, but why the expectation return in that array {2824, 1774, -1490, -9084, -9696, 23094} is 1 ? For me it should be -1;