20240311 Finished

src/problem/mod.rs

@@ -69,4 +69,5 @@ mod p2917_find_the_k_or_of_an_array;
 mod p2575_find_the_divisibility_array_of_a_string;
 mod p2834_find_the_minimum_possible_sum_of_a_beautiful_array;
 mod p2386_find_the_k_sum_of_an_array;
-mod p299_bulls_and_cows;
+mod p299_bulls_and_cows;
+mod p2129_capitalize_the_title;

src/problem/p2129_capitalize_the_title.rs

@@ -0,0 +1,37 @@
+/**
+ * [2129] Capitalize the Title
+ */
+pub struct Solution {}
+
+
+// submission codes start here
+
+impl Solution {
+    pub fn capitalize_title(title: String) -> String {
+        let mut words: Vec<&str> = title.split(' ').collect();
+        let mut result = String::new();
+
+        for word in words.iter_mut() {
+            if word.len() < 3 {
+                result = result + &word.to_lowercase() + " ";
+            } else {
+                result = result + &word[0..1].to_uppercase() + &word[1..].to_lowercase() + " ";
+            }
+        }
+
+        result.trim().to_owned()
+    }
+}
+
+// submission codes end
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_2129() {
+        assert_eq!("Capitalize The Title", Solution::capitalize_title("capiTalIze tHe titLe".to_owned()));
+        assert_eq!("First Letter of Each Word", Solution::capitalize_title("First leTTeR of EACH Word".to_owned()));
+    }
+}