Hey perl experts, I am trying to create a perl script on windows active perl, that prints a word only once for a group of adjacent repeats, and that prints the line number that these words appeared. I've created a script that shows just the words are adjacently repeated with their line numbers but it shows all the repeats of a particular group rather than just one of them. Here is the script that I have done. I'd really appreciate your help, as I am a new learner of perl. Thank you. 


#!/usr/bin/perl

# rcwords.pl: print immediately adjacent repeated words once from inpu
+t,
# even if they are repeated more than once,
# and print out these words along with the line number(s) that they ap
+peared.

use English;
use diagnostics;

$prevword = '';
$n = 0;

while ($line = <>) {
  
    $n = $n + 1;

    $line =~ s/[[:punct:]]/ /g;

    $line = lc $line;

    @words = split /[[:space:]]+/, $line;

    foreach $word (@words) {

        if ($word ne '') {

            if ($word eq $prevword) {
                print " $n $word\n";
            }

            $prevword = $word;

        }
    }
}

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In reply to removing repeats by dummy2

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