If you want to golf you may increase yout handicap by shortening 
for (@rec) {
    /(H\(\d+\))/ && do { push @{$count{$1}}, $_ }
}

for (keys %count) {
    if ($#{$count{$_}}) {
        print "$_\n" for @{$count{$_}}
    }
}

[download]
to just 
/(H\(\d+\))/ && push(@{$count{$1}},$_."\n") for (@rec);
print map @{$count{$_}},grep $#{$count{$_}},keys %count;

[download]
Anyone volunteering to explain my code?

In reply to Re: Re: Re: duplicate lines in array by Skeeve
in thread duplicate lines in array by harry34

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