A possible solution? 
#!/usr/bin/perl

use strict;

my %HoH;
while (<DATA>) {
    my ($item, $group, $count) = split;
    if ( defined( $HoH{$item}{$group} ) ) {
        $HoH{$item}{$group} = $count if ( $HoH{$item}{$group} < $count
+ );
    }
    else {
        $HoH{$item}{$group} = $count;
    }
}

foreach my $item ( keys %HoH ) {
    foreach my $group ( keys %{ $HoH{$item} } ) {
        print "$item $group $HoH{$item}->{$group}\n";
    }
}

__DATA__
1ct9B 3 1
1f7uA 2 3
1gaxA 2 1
1gpmA 3 5
1ihoA 6 4
1mopA 6 3
1ileA 2 5
1iq0A 2 3
1vlhB 5 3
1jhdA 5 4

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In reply to Re: Retrieving data with largest count by bichonfrise74
in thread Retrieving data with largest count by Angharad

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