#!/usr/bin/perl -w

use strict;
use Data::Dumper;

my %hash = (
            'a'    => [1, 'One'],
            'b'    => [2, 'Two'],
            'c'    => [3, 'Three'],
            'd'    => [4, 'Four'],
            'e'    => [5, 'Five'],
            'f'    => [6, 'Six'],
            'g'    => [12, 'Twelve'],
);

my %key_ht;
foreach my $key (keys %hash) { $key_ht{$hash{$key}[0]} = $key }

print "key_ht:", Dumper(\%key_ht), "\n";

foreach my $key (sort { $a <=> $b } keys %key_ht) {

    my $num = $hash{$key_ht{$key}}[0];
    my $str = $hash{$key_ht{$key}}[1];
    print "Integer is: ", $num, " -- Alpha is: ", $str, "\n";
}