Course topic 13 exercises¶

 int y(x, buckets) {
   int result = 0;
   while ( x != 0 ){
     // Multiply the first and last digits of x and add it to result.
     result += last_digit(x) * first_digit(x)
     x = remove_first_and_last_digit(x)
     }
 return (result mod buckets)
 }