PerlHowTo: How to sort perl hash on values and order the keys correspondingly (in two arrays maybe)?

First sort the keys by the associated value. Then get the values (e.g. by using a hash slice).

my @keys = sort { $h{$a} <=> $h{$b} } keys(%h);
my @vals = @h{@keys};

Or if you have a hash reference.

my @keys = sort { $h->{$a} <=> $h->{$b} } keys(%$h);
my @vals = @{$h}{@keys};

References:

http://stackoverflow.com/questions/10901084/how-to-sort-perl-hash-on-values-and-order-the-keys-correspondingly-in-two-array