c:\test\anonymonks.pl
Global symbol "$lenBig" requires explicit package name at C:\test\1070
+240.pl line 9.
Execution of C:\test\1070240.pl aborted due to compilation errors.
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my $bigstring="MNRIYSLRYSA...";
my $smallstring="GTMARNDGQGKAA...";
my $lenBig = length $bigstring;
my $lenSmall = length $smallstring;

for my $o ( 0 .. ( $lenBig - $lenSmall + 1 ) ) {
    my $masked = substr( $bigstring, $o, $lenSmall ) ^ $smallstring;
    my $matched = $masked =~ tr[\0][];
    if( ( $matched / $lenSmall ) > 0.095 ) {
        $masked =~ tr[\1-\255][ ];
        $masked =~ tr[\0][*];
        printf "%.2f%% match at offset %u\n", $matched / $lenSmall * 1
+00, $o;
        print substr $bigstring, $o, $lenSmall;
        print $smallstring;
        print $masked;
    }
}
];

$otherstring = q[
my $bigstring="MNRIYSLRYSA...";
my $smallstring="GTMARNDGQGKAA...";
my $lenBig = length $bigstring;
my $lenSmall = length $smallstring;

for my $o ( 0 .. $lenBig - 1  ) {
    my $masked = substr( $bigstring, $o, $lenSmall ) ^ $smallstring;
    my $matched = $masked =~ tr[\0][];
    if( ( $matched / $lenSmall ) > 0.90 ) {
        $masked =~ tr[\1-\255][ ];
        $masked =~ tr[\0][*];
        printf "%.2f%% match at offset %u\n", $matched / $lenSmall * 1
+00, $o;
        print substr $bigstring, $o, $lenSmall;
        print $smallstring;
        print $masked;
    }
}
];

print compare( $firststring, $otherstring );

__END__
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