Good solution, but i'll try to reduce memory consumption of it: 
my @index = 0..$#a;
@index = sort { $a[$a] <=> $a[$b] } @index;

my @combined_sorted = map { $a[$_],$b[$_] } @index;

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In reply to Re^2: sorting two arrays together by youlose
in thread sorting two arrays together by siskos1

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