CPSC 170 Postlab 9: A Linked Set Implementation

File LinkedSet.java contains the LinkedSet class from the text. This relies on the LinkedIterator class, which is also in the text, and on the SetADT interface that you used in lab. The LinkedSet class includes implementations for the add, removeRandom, remove, and iterator methods. Fill in code for the remaining methods -- isEmpty, size, contains, toString, addAll, union, intersection, and equals. Skeletons are provided for each with dummy return values so you can compile it to test the methods as you go.