Sorry it should not have been commented out, so the code is: 
my $ct=0;  my @nxxult = (); my @Ultmnsort = (); my @indexUlt = ();
for(my $rn=4;$rn<=32;$rn +=4)
  {
    for(my $bn=1;$bn<=$row[0];$bn++)
    {
       $nxxult[$bn]=$ldx[$bn][$rn];
    }
       @indexUlt=sort{$nxxult[$a]<=>$nxxult[$b]} 0 ... $#nxxult;
        $Ultmnsort[$ct]=$indexUlt[0];
        $Ultmxsort[$ct]=$indexUlt[$#indexUlt];
        $ct++;
  }

[download]
I don't really know what is going on in this code, I am working on it.

In reply to Re^2: Assist in understanding of old code by ozgurp
in thread Assist in understanding old code by ozgurp

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