You could declare and populate the hash (along with the sequence counter) all in one go using a do block.

$ perl -e '
> my $tokens = q{32,15,4,72,13,28,14};
> my %code = do{
>    my $i = 0;
>    map { $_ => $i ++ } split m{,}, $tokens;
>    };
> print qq{$_ => $code{ $_ }\n}
>    for sort { $code{ $a } <=> $code{ $b } } keys %code;'
32 => 0
15 => 1
4 => 2
72 => 3
13 => 4
28 => 5
14 => 6
$

[download]

I hope this is helpful.

Cheers,

JohnGG

In reply to Re: Convert a string into a hash by johngg
in thread Convert a string into a hash by vitoco

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