public void OrdenarLista() {
    Tarjeta temp;
    for(int i = 0; i < vector1.length -1; i++){
      for(int j = 0; j < vector1.length -1; j++){
        if((vector1[j] != null && vector1[j+1] != null) && vector1[j].getNumeroDeTarjeta() > vector1[j+1].getNumeroDeTarjeta()){
          temp = vector1[j];
          vector1[j] = vector1[j+1];
          vector1[j+1] = temp;
        }
      }
    }
  }