Basically this script takes the 4 sequences in the @data array and aligns them and gives a final output that looks like this.. 
$VAR1 = {
          'A' => [
                   2,
                   1,
                   1
                 ],
          'T' => [
                   1,
                   3,
                   1
                 ],
          'C' => [
                   0,
                   0,
                   1
                 ],
          'G' => [
                   1,
                   0,
                   1
                 ]
        };

[download]
.. whichs is nothing but the occurence of that particualr letter ( A T G or C) in postion 1 2 and 3..... the code is as follows 
#!usr/bin/perl
use strict;
use warnings;
use Data::Dumper;
local our @deep;
local $; = ','; # A vestige of a previous version

my @data = qw(AAA ATG TTT GTC);
my @d2 = map [ split // ], @data;

my (%hash);
for my $entry (@d2) {
*deep = $entry;
for my $nx (0..$#deep) {
$hash{$deep[$nx]}[$nx]++;
}
}
foreach my $entry (values %hash) {
$entry = [ map defined $_ ? $_ : 0, @$entry ];
}
print Dumper(\%hash);

[download]

In reply to can this perl script be explained how and what it is going on...???? by sharanyaravi

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