The following prints exactly what you asked for (as I read it). I'm not sure this is what you mean though.

use strict;
use warnings;

my @matrix = (
    {A => 22, C => 51, G => 7, T => 0},
    {A => 9,  C => 30, G => 0, T => 2},
);

for my $h (@matrix) {
    my @temp;
    print "[ ";
    for my $k (sort {$h->{$b} <=> $h->{$a}} (keys(%{$h}))) {
        print "$h->{$k} ";
        push @temp, $k
    }
    print "@temp ]\n"
}

[download]

UPDATE: Modified to address your updates above. Note this *PRINTS* what you want, it doesn't put the date into a new structure - you can figure that part out. 

use strict;
use warnings;

my @matrix = (
    {A => 4,  C => 0,  G => 13, T => 0},
    {A => 5,  C => 0,  G => 12, T => 0},
    {A => 15, C => 0,  G => 2,  T => 0},
    {A => 0,  C => 17, G => 0,  T => 0},
);

for my $h (0..$#matrix) {
    my @temp;
    print "[ $h ";
    for my $k (sort {$matrix[$h]->{$b} <=> $matrix[$h]->{$a}} (keys(%{
+$matrix[$h]}))) {
        print "$matrix[$h]->{$k} ";
        push @temp, $k
    }
    print "@temp ]\n"
}

[download]

In reply to Re: Complex sort of array of hashes into an array of arrays by VinsWorldcom
in thread Complex sort of array of hashes into an array of arrays by BioJL

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