Wordle best clue calculator

main.rs

fn best_clue(words_list: &Vec<Vec<char>>) -> Clue {
    words_list
        .par_iter()
        .enumerate()
        .map(|(i, word)| {
            let mut bucket_counts = [0; 3_usize.pow(5)];

            for j in 0..words_list.len() {
                //let overlap = fast_calculate_word_overlap(&word_overlaps, word_count, i, j);
                let overlap = calculate_word_overlap(&word, &words_list[j]);

                bucket_counts[overlap_to_index(&overlap)] += 1;
            }

            let value = match &SCORE_METHOD {
                ScoreType::MinimiseLargestBucketSize => *bucket_counts.iter().max().unwrap(),
                ScoreType::MinimiseVariance => {
                    let average = bucket_counts.iter().sum::<usize>() / bucket_counts.len();
                    bucket_counts
                        .iter()
                        .map(|v| (v - average).pow(2))
                        .sum::<usize>()
                }
            };

            Clue {
                value: value,
                word: word.to_vec(),
            }
        })
        .min_by(|a, b| a.value.cmp(&b.value))
        .unwrap()
}