The script that you write needs to insure that only matching words are compared for difference. You can place the code that inserts a "+" at the first string difference position into a subroutine that can be called from anywhere within your script. For example:
use strict;
use warnings;
my $string1 = 'amayaM';
my $string2 = 'amayamAn';
my $result = firstStrDiff( $string1, $string2 );
print $result, "\n";
sub firstStrDiff {
my ( $s1, $s2 ) = @_;
( $s1 ^ $s2 ) =~ /[^\x00]/;
substr( $s2, $-[0], 0 ) = '+' if defined $-[0];
return $s2;
}
Output:
amaya+mAn
This can help you focus on just the remaining code that aligns the words you want send to this subroutine.
Hope this helps!
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