rustgym/leetcode/
_1271_hexspeak.rs

1struct Solution;
2
3#[allow(clippy::wrong_self_convention)]
4impl Solution {
5    fn to_hexspeak(num: String) -> String {
6        let x: i64 = num.parse::<i64>().unwrap();
7        let s = format!("{:X}", x);
8        let mut res: Vec<char> = vec![];
9        for c in s.chars() {
10            match c {
11                '0' => res.push('O'),
12                '1' => res.push('I'),
13                c @ 'A'..='F' => res.push(c),
14                _ => return "ERROR".to_string(),
15            }
16        }
17        res.iter().collect()
18    }
19}
20
21#[test]
22fn test() {
23    let num = "257".to_string();
24    let res = "IOI".to_string();
25    assert_eq!(Solution::to_hexspeak(num), res);
26    let num = "3".to_string();
27    let res = "ERROR".to_string();
28    assert_eq!(Solution::to_hexspeak(num), res);
29    let num = "619879596177".to_string();
30    let res = "ERROR".to_string();
31    assert_eq!(Solution::to_hexspeak(num), res);
32}
rustgym/leetcode/_1271_hexspeak.rs

rustgym/leetcode/
_1271_hexspeak.rs
