Hello dilip.renkila, and welcome to the Monastery!

(1) Your third foreach loop has keys %{$update{$j}} where it should have keys %{$update{$i}{$j}}.

(2) If you want the output to be sorted by key, that’s easy: just add sort in each foreach loop:

foreach my $i (sort keys %update)
{
    ...
    foreach my $j (sort keys %{$update{$i}})
    {
        foreach my $k (sort keys %{$update{$i}{$j}})
        {
            ...
        }
    }
}

[download]

But note that this “sorts in standard string comparison order.” (see sort) To sort numerically, you will need to use:

sort { $a <=> $b } keys ...

[download]

where the keys are numeric.

Hope that helps,

Athanasius <°(((>< contra mundum Iustus alius egestas vitae, eros Piratica,

In reply to Re: sorting hash of hashes by Athanasius
in thread sorting hash of hashes by dilip.renkila

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