Select Code to Download

   109876543210
    GNNTCGANNTT
      *     *

return value 2 and 8

   109876543210
    GAATCGNNNTT
            *

return value 2

   109876543210
    GANNCGNNNNN
       *      *

return value 0 and 7

my $str = "GNNTCGANNTT";
my @char_arr = split (//,$str);
...
}