Function `normalized_damerau_levenshtein`

fn normalized_damerau_levenshtein(a: &str, b: &str) -> f64

Calculates a normalized score of the Damerau–Levenshtein algorithm between 0.0 and 1.0 (inclusive), where 1.0 means the strings are the same.

use strsim::normalized_damerau_levenshtein;

assert!((normalized_damerau_levenshtein("levenshtein", "löwenbräu") - 0.27272).abs() < 0.00001);
assert!((normalized_damerau_levenshtein("", "") - 1.0).abs() < 0.00001);
assert!(normalized_damerau_levenshtein("", "flower").abs() < 0.00001);
assert!(normalized_damerau_levenshtein("tree", "").abs() < 0.00001);
assert!((normalized_damerau_levenshtein("sunglasses", "sunglasses") - 1.0).abs() < 0.00001);