/**
 *
 * @author Smart Class
 */
public class SingleLinkedList {
  Node start;



   class Node{
   String data;
   Node    next;

   public Node(String d){
       data = d;
       next = null;
   }
  }

   public SingleLinkedList() {
       start = null;
   }

   public void addFirst(String data){
       Node n = new Node(data);
       n.next = start;
       start = n;
   }

   
    public void addLast(String data){
       Node n = new Node(data);
       Node current = start;
       if (start == null){
           start = n;
       }
       else{
           while(current.next != null)
                current = current.next;
       }
       current.next = n;
   }


   public void showAll(){
       Node curr = start;
       while(curr != null){
           System.out.println(curr.data);
           curr = curr.next;
       }
   }

}