"($sub1, $sub2, $sub3) = split (/\_/, @array,3);
$sub3 = sort { $b <=> $a } $sub3;"
It isn't clear to me what your array is exactly, but in any case, as has been remarked already, $sub3 will be a single
string, and sorting it will have no effect. It isn't clear to me what you want to do or I would have offered more suggestions.
chas
(Update: Actually, what I said is misleading. I *think* the
first line of the code above will take @array in scalar context giving the number of elements, and then $sub1 will
be this value; $sub2 and $sub3 will be empty. The sorting
will do nothing useful, of course. So perhaps you should just ignore my reply above and read the other replies...)