public class MyLL {
   MyNode head;


/* FROM HERE - FROM HERE - FROM HERE - FROM HERE - FROM HERE */


   public boolean twoInARow() {
   }

   public boolean isWord(String str) {
   }

   public void deleteLast() {
   }

   /* You can use the yourMainMethod method to do any testing you'd
      like to do (none is also allowed). It will be automatically
      called when you run the class without any command line
      parameters.
    */
   public static void yourMainMethod() {
   }


/* TO HERE - TO HERE - TO HERE - TO HERE - TO HERE - TO HERE */


   public MyLL() {
      head = null;
   }
   public void insert(char c) {
      MyNode nd = new MyNode(c);
      nd.setNext(head); 
      head = nd;
   }
   public String toString() {
      String str="";
      MyNode nd = head;
      while (nd != null) {
         str += nd.getLetter()+" ";
         nd=nd.getNext();
      }
      return str;
   }

   public static void main(String[] args) {
      MyLL theList = new MyLL();
      int i,n;

      if (args.length==0)
         yourMainMethod();
      else {
         for (i=0; i<args[0].length(); i++)
            theList.insert(args[0].charAt(i));
         System.out.println(theList);
         System.out.println(theList.twoInARow());
         System.out.println(theList.isWord("hello"));
         System.out.println(theList.isWord("olleh"));
         theList.deleteLast();
         System.out.println(theList);
         System.out.println(theList.isWord(""));
         System.out.println(theList);
         theList.deleteLast();
         System.out.println(theList);
      }
   }
}

class MyNode {
   private char letter;
   private MyNode next;

   public MyNode(char c) {
      letter = c;
      next = null;
   }
   public char getLetter() {
      return letter;
   }
   public MyNode getNext() {
      return next;
   }
   public void setNext(MyNode nd) {
      next = nd;
   }
}