my @sortedKeys = $numorder
                        ? map { $_->[1] } sort { $a->[0] <=> $b->[0] } map { [ $hash{$_}{strasse}, $_ ] } keys %hash
                        : map { $_->[1] } sort { $a->[0] cmp $b->[0] } map { [ $hash{$_}{strasse}, $_ ] } keys %hash;