// Hunter Schafer, CSE 143
// An example of a ListNode manipulation problem
public class ListNodeExamples {
    public static void main(String[] args) {
        ListNode dummy = new ListNode(-1);
        
        // Problem 2
        // Before:
        //    list -> 10 -> 20
        // After:
        //    list -> 30 -> 10 -> 20
        ListNode list = new ListNode(10, new ListNode(20));
        
        // Original solution
        // ListNode temp = new ListNode(30);
        // temp.next = list;
        // list = temp;
        
        // More condensed solution
        list = new ListNode(30, list);
        
        // This is similar to
        // int x = 5;
        // x = x + 1;
    }
}