As trammell pointed out index() returns 0 if the sought for string is the beginning. Try this:
@Array1 = qw{XXX FFF ZZZ AAA BBB QQQ LLL JKK III CCC DDD DCD};
@Array2 = ("XXX BBB AAA CCC DDD EEE", "FFF NNN JKK III LLL QQQ");
foreach(@Array1)
{
$string1 = $_;
foreach(@Array2)
{
my $string2 = $_;
my $result = index($string2, $string1);
print $string1, ($result >= 0 ? " IS " : " IS NOT",
+ " found in "), $string2, "\n";
}
}
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