// Insert at tail of list - the iterative version...

import java.io.*;

class ListElement
{
   int value;
   ListElement next;
}

class Linklist2
{
   static ListElement Insert(ListElement head, ListElement newelem)
   { 
      ListElement ptr;   // local variable to run down the list
 
      if (head == null)
      {  // Empty list, make "newelem" the first element
         newelem.next = null;       // Mark last element
         return(newelem);
      }
      else
      {  // find the last element
         ptr = head;
         while (ptr.next != null)
            ptr = ptr.next;
         ptr.next = newelem;        // Link new to the last element
         newelem.next = null;       // Mark last element
         return(head);
      }
   }
 


   public static void Print(ListElement head)
   {
      while (head != null)
       { System.out.print(head.value + " ");
         head = head.next;
       }
      System.out.println();
   }

   public static void main(String[] args) throws IOException
    {
      BufferedReader stdin = new BufferedReader
                         (new InputStreamReader(System.in));
      ListElement head, ptr;

      head = null;    // Start with an empty list....
      while(true)
       { 
	 ptr = new ListElement();          // Make a new list element

         System.out.print("Enter number: ");
         ptr.value = Integer.parseInt(stdin.readLine());

         head = Insert(head, ptr);         // Insert into list

         System.out.print("List: ");
         Print(head);
         System.out.println();
       }
    }
}