$scan->{$b} returns an array reference. You are comparing references which is not what you want. Change the first part of sort to
$#{ $scan->{$b} } <=> $#{ $scan->{$a} }

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or 
@{ $scan->{$b} } <=> @{ $scan->{$a} }

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لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

In reply to Re: two order sort by choroba
in thread two order sort by ag4ve

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