“7777…8?!??!“, exclaimed Bob, “I missed it again! Argh!” Every time there’s an interesting number coming up, he notices and then promptly forgets. Who doesn’t like catching those one-off interesting mileage numbers?
Let’s make it so Bob never misses another interesting number. We’ve hacked into his car’s computer, and we have a box hooked up that reads mileage numbers. We’ve got a box glued to his dash that lights up yellow or green depending on whether it receives a
1 or a
It’s up to you, intrepid warrior, to glue the parts together. Write the function that parses the mileage number input, and returns a
2 if the number is “interesting” (see below), a
1 if an interesting number occurs within the next two miles, or a
0 if the number is not interesting.