my %hash;
while (my ($filename, $number) = &get_both) {
   $hash{$filename} = $number;
}

my @sorted_files = sort { $hash{$a} <=> $hash{$b} } keys %hash;

##</code><code>##

my @array;
while (my ($filename, $number) = &get_both) {
   push(@array, [ $filename, $number ]);
}

my @sorted = sort { $a->[1] <=> $b->[1] } @array;