逆序倒转

1. pub fn reverse(text: &str) -> String {
2. text.chars().rev().collect()
3. }

5. #[cfg(test)]
6. mod tests {
7. use super::*;

9. #[test]
10. fn test_simple() {
11. assert_eq!(reverse("racecar"), "racecar");
12. }

14. #[test]
15. fn test_sentence() {
16. assert_eq!(reverse("step on no pets"), "step on no pets");
17. }
18. }