// Erika Wolfe
// Simple example of using an interface to write general code that can be
// applied to two types of list objects.
public class ListClient {
    public static void main(String[] args) {
        IntList list1 = new ArrayIntList();
        processList(list1);

        IntList list2 = new LinkedIntList();
        processList(list2);
        
        // This doesn't compile because we cannot
        // instantiate an IntList-
        // IntList list3 = new IntList();
    }
    
    // Does some simple operations with the given list
    // and prints the result
    public static void processList(IntList list) {
        list.add(18);
        list.add(27);
        list.add(93);
        System.out.println(list);
        list.remove(1);
        System.out.println(list);
    }
}