Okay, well the approach I would take is to create a new hash where the keys/values of your existing hash are reversed.

You simply iterate through you existing hash and build up the new hash as you go, like so: 

foreach my $key (keys %hash) {
    $newhash{$hash{$key}} += $key;
}

[download]
Using your sample data, that will give you something that looks like: 
%newhash = (
             '1' => 40,
             '2' => 60
           );

[download]
Does this help?

Cheers,
Darren :)

In reply to Re: Confusion due to hash by McDarren
in thread Confusion due to hash by tamaguchi

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