Hi! This variant of count_frequencies works much faster than original: 
sub count_frequencies {
    my (@strings) = @_;

    my $frequencies = ();
    for (@strings) {
        foreach my $i (0..length($_)-1) {
            $frequencies->{substr($_, $i,1)}++;
        }
    }

    return $frequencies;
}

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In reply to Re: Huffman coding in pure Perl by Anonymous Monk
in thread Huffman coding in pure Perl by vrk

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