public static int OrdenarPorApellidoDesc(Alumno a1, Alumno a2) { return(-1 * Alumno.OrdenarPorApellidoAsc(a1, a2)); }
public static int OrdenarPorApellidoDec(Alumno a, Alumno b) { return(-1 * Alumno.OrdenarPorApellidoAsc(a, b));//String.Compare(b.apellido, a.apellido); }