20250524 finished.

src/problem/mod.rs

@@ -672,3 +672,5 @@ mod p3356_zero_array_transformation_ii;
 mod p3362_zero_array_transformation_iii;
 
 mod p3068_find_the_maximum_sum_of_node_values;
+
+mod p2942_find_words_containing_character;

src/problem/p2942_find_words_containing_character.rs

@@ -0,0 +1,39 @@
+/**
+ * [2942] Find Words Containing Character
+ */
+pub struct Solution {}
+
+// submission codes start here
+
+impl Solution {
+    pub fn find_words_containing(words: Vec<String>, x: char) -> Vec<i32> {
+        words
+            .iter()
+            .enumerate()
+            .filter_map(|(i, v)| if v.contains(x) { Some(i as i32) } else { None })
+            .collect()
+    }
+}
+
+// submission codes end
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_2942() {
+        assert_eq!(
+            vec![0, 1],
+            Solution::find_words_containing(vec_string!("leet", "code"), 'e')
+        );
+        assert_eq!(
+            vec![0, 2],
+            Solution::find_words_containing(vec_string!("abc", "bcd", "aaaa", "cbc"), 'a')
+        );
+        assert_eq!(
+            Vec::<i32>::new(),
+            Solution::find_words_containing(vec_string!("abc", "bcd", "aaaa", "cbc"), 'z'),
+        );
+    }
+}