I don't know about your stated problem, but your loops have an off-by-one error: 

    my $count = @{ $doc->{$sub1} };
    print "\n$sub1\t";

    for (my $i=0; $i <= $count; $i++) {

[download]

Should be: 

    my $count = $#{ $doc->{$sub1} };
    print "\n$sub1\t";

    for my $i ( 0 .. $count ) {

[download]

The same applies to $count2 and $count3.

In reply to Re: Nested Loops vs Good programming by jwkrahn
in thread Nested Loops vs Good programming by Sporti69

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