I have inherited some perl scripts that I've generally been able to edit well enough with my knowledge from other languages, but I need to make a change that has me stumped.

The user wants the output that happens from this loop to be reversed.

for ($nn=0;$nn<=$range_max;$nn++) { my $range=sprintf("%02d",$nn); $sum_of_A += $A_EACH_RANGE{"$range"}; $sum_of_B += $B_EACH_RANGE{"$range"}; printf("\"\",\"%s\",\"%s\",\"%s\",\"%s\",\"%s\"\n", $scale[$nn], commify($A_EACH_RANGE{"$range"}), commify($B_EACH_RANGE{"$range"}), commify($sum_of_A), commify($sum_of_B)); } 

So I figured all I had to do was start the for loop at the end like this:

for ($nn=$range_max;$nn>=0;$nn--) { 

Then I realized there's some cumulative math going on in the loop, which means the sum of everything needs to be at the top now instead of the bottom.

Now I'm stuck, I've made a few attempts like pushing it into an array so I could have the option to output in forward or reverse, but all my attempts just hang with no warnings or errors.

I figure there's a more elegant solution but my Google-fu hasn't helped.

submitted by /u/wirikidor
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