hamming: Replaced the Debug formatting of the strands with the Display formatting in the uninplemented message
/// Return the Hamming distance between the strings,
/// or None if the lengths are mismatched.
pub fn hamming_distance(s1: &str, s2: &str) -> Option<usize> {
- unimplemented!("What is the Hamming Distance between {:?} and {:?}", s1, s2);
+ unimplemented!("What is the Hamming Distance between {} and {}", s1, s2);
}
