These are your duplicate elements. This is in fact a very good solution because you can extend it to found count of duplicates as well. If you remember, I have used this approach to find duplicate ...

Given a list of integers with all elements being duplicated except ONE, find the element that is not duplicated ie. int array[] = {1,2,3,4,4,3,1,5,2,14,5}; Result would be 14; Of course we could use a ...