public void OrdenarListaEDD(Date fechaUs){
NodoLista aux=head;
 NodoLista aux2=head.getNext() ;

      while(aux.getNext()!=null){
          aux2=head.getNext();
          while(aux2.getNext()!=null ){
           if(!aux2.getNext().getDato().getFec_ent().before(aux.getNext().getDato().getFec_ent())){
           } else {
               NodoLista aux3=aux2.getNext();
               aux3.setNext(aux.getNext());
               aux.setNext(aux3);
               aux2.setNext(aux2.getNext().getNext());
              }
           aux2=aux2.getNext();

         }

          aux=aux.getNext();
}

}