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. }