public class Liste {
  public Object data;
  public Liste next;
  
  public Liste( Object d ) {
    data = d;
    next = null;
  }
  
  public void append(Liste l) {
    Liste t = this;
    while (t.next != null) {
      t = t.next;
    }
    t.next = l;
  }
  
  public Liste get(int position) {
    Liste t = this;
    while ( position > 0 && t != null) {
      t = t.next;
      position--;
    }
    return t;
  }
  
  public String toString() {
    Liste t = this; String r = "";
    while (t != null) {
      r += t.data.toString();
      t = t.next;
    }
    return r;
  }
}