$hash{-10} = 'bar';
$hash{-1} = 'foo';
$hash{12} = 'baz';

%hash =
  map { (keys %hash) - 1 => delete $hash{$_} }
  sort {$b <=> $a}
  keys %hash;

print map {"$_ => $hash{$_}\n"} sort { $a <=> $b } keys %hash;

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In reply to Re: re-key a hash ( Best (-: ) by ccn
in thread re-key a hash by Anonymous Monk

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