G'day MSOL,

Welcome to the monastery.

You appear to have messed up your HTML table markup (i.e. "<td  <td  <td  <td  <td  <td"); however, from your initial description, I'll assume the data (as seen) is OK: please advise if this is a wrong assumption.

Sample input would have been useful: I've created dummy data (in the code below) based on your posted code. Again, please advise if my guess at this is wrong.

I also don't know how the output should be ordered. What you've shown appears grouped by key but otherwise haphazard.

To retain the order of keys as first seen in the input, this technique should suffice:

#!/usr/bin/env perl -l

use strict;
use warnings;

my (%data, @order);

while (<DATA>) {
    chomp;
    my ($key, $value) = split /\s*,\s*/;
    push @order, $key unless exists $data{$key};
    push @{$data{$key}}, $value;
}

for my $key (@order) {
    print "|$key|$_|" for @{$data{$key}};
}

__DATA__
60,811
50, 813
34 , 820
32,821
34 ,820
32 , 821
[download]

Output:

|60|811|
|50|813|
|34|820|
|34|820|
|32|821|
|32|821|
[download]

If you don't care about order (but still want to group the keys), you can just do this:

#!/usr/bin/env perl -l

use strict;
use warnings;

my %data; 

while (<DATA>) {
    chomp;
    my ($key, $value) = split /\s*,\s*/;
    push @{$data{$key}}, $value;
}

for my $key (keys %data) {
    print "|$key|$_|" for @{$data{$key}};
}

__DATA__
60,811
50, 813
34 , 820
32,821
34 ,820
32 , 821
[download]

Hash keys aren't ordered so your output may well differ from mine; you may even get a different order each time you run the code. Here's the output from a sample run:

|34|820|
|34|820|
|60|811|
|32|821|
|32|821|
|50|813|
[download]

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