Merge pull request #6 from ProgSoc/matrix-fix

fix(matrix): empty words

Author: TianLangHin

competition/matrix/src/main.rs

@@ -37,6 +37,7 @@ fn random_matrix_and_words<R: Rng>(rng: &mut R) -> (Matrix, Vec<String>) {
     let word_list: BTreeSet<String> = lipsum_words(3 * MATRIX_DIM)
         .split_whitespace()
         .map(|s| s.chars().filter(|c| c.is_alphabetic()).collect::<String>())
+        .filter(|s| !s.is_empty())
         .collect();
     let mut matrix = [[' '; MATRIX_DIM]; MATRIX_DIM];
     for offset_index in 0..MATRIX_DIM {