Design an algorithm for an application-level method compare that accepts two String lists as arguments and returns an int representing a count of the number of elements from the first list that are also on the second list. The signature for the method should be: int compare(ListInterface list1, ListInterface list2) 1. Devise a test plan for your algorithm. 2. Implement and test your algorithm. For this problem, you can write the ListCompare class which contains the compare method, then in the main method, simply run some examples to demonstrate your algorithm works properly with list1 and list2.