Thanks for the reply! The code compiled and ran, but produced no output. I ran into the same problem with the C-style for loops (deleted now from the code, copied and pasted below). I wasn't completely sure if my problem was a regex issue, a problem in the implementation, or something simple I missed?

for (my $j=0; $j<$#arrayFromCSV; $j++) {
    for (my $i=0; $i<$#wkArray; $i++) {
        if ("$arrayFromCSV[$j]" =~ /$wkArray[$i]/g) {
            print "$wkArray[$i+1]\n";
             }
        }
    }
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