Function librualg::string::levenshtein_distance

pub fn levenshtein_distance(
    first: &str, 
    second: &str, 
    delete_cost: u32, 
    insert_cost: u32, 
    replace_cost: u32
) -> u32

Levenshtein distance (Metric of the difference between two symbol sequences).

 use librualg::string::levenshtein_distance;

 assert_eq!(levenshtein_distance("POLYNOMIAL", "EXPONENTIAL", 1, 1, 1), 6);
 assert_eq!(levenshtein_distance("aaa", "aaa", 1, 1, 1), 0);