class List
{
   int value;
   List next;
}

public class delete 
{
   /* ====================================================
      delete(h): delete the first elem from the list h
                 return new list
      ==================================================== */
   public static List delete (List h)
   {
      if ( h != null )
         return (h.next); // Return new list that starts at h.next
      else
         return null;
   }

   public static void main(String[] args)
   {
      List head = null;

      // Insert
      for (int i = 1; i <= 10; i++)
      {
         List e = new List();
         e.value = i;
         head = insert(head, e);       // Insert i at head
         print(head);  
      }

      // Delete
      for (int i = 1; i <= 10; i++)
      {
         head = delete(head);          // Delete at head
         print(head);  
      }
   }

   // Insert at head
   public static List insert (List h, List e)
   {
      e.next = h;
      return e;		// Return new list that starts at e
   }

   // Print the list
   public static void print(List h)
   {
      while (h != null)
      {
         System.out.printf("%d ", h.value);
         h = h.next;
      }
      System.out.printf("\n");
   }
}