| 1 | pub fn rotated_digits(n: i32) -> i32 { |
| 2 | pub fn is_good(e: i32) -> bool { |
| 3 | let digit_chars = e.to_string().chars().collect::<Vec<char>>(); |
| 4 | let mut count = 0; |
| 5 | for digit_char in digit_chars { |
| 6 | if digit_char == '3' || digit_char == '4' |
| 7 | || digit_char == '7' { |
| 8 | return false |
| 9 | } |
| 10 | if digit_char == '2' || digit_char == '5' |
| 11 | || digit_char == '6' || digit_char == '9' { |
| 12 | count += 1 |
| 13 | } |
| 14 | } |
| 15 | count > 0 |
| 16 | } |
| 17 | let mut nums = (1..=n).collect::<Vec<i32>>(); |
| 18 | nums.retain(|e|is_good(*e)); |
| 19 | nums.len() as i32 |
| 20 | } |
| 21 | |
| 22 | fn main() { |
| 23 | println!("{:?}", rotated_digits(10)); |