private static DLLNode removeHead(DLList dlll)
 {
     return(dlll.removeHead());
 }
 public static void removeNode(DLList dlll, DLLNode p)
 {
     dlll.removeNode(p);
 }
 public static DLLNode search(DLList dllList, String str)
 {
     return(dllList.search(str));
 }
 private static DLLNode removeTail(DLList dlll)
 {
     return(dlll.removeTail());
 }