20240420 Finished

src/problem/mod.rs

@@ -106,4 +106,5 @@ mod p380_insert_delete_getrandom_o1;
 mod p238_product_of_array_except_self;
 mod p134_gas_station;
 mod p135_candy;
-mod p42_trapping_rain_water;
+mod p42_trapping_rain_water;
+mod p58_length_of_last_word;

src/problem/p58_length_of_last_word.rs

@@ -0,0 +1,35 @@
+/**
+ * [58] Length of Last Word
+ */
+pub struct Solution {}
+
+
+// submission codes start here
+
+impl Solution {
+    pub fn length_of_last_word(s: String) -> i32 {
+        let words : Vec<&str> = s.split(' ').collect();
+
+        for word in words.iter().rev() {
+            if word.len() != 0 {
+                return word.len() as i32;
+            }  
+        }
+
+        0
+    }
+}
+
+// submission codes end
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_58() {
+        assert_eq!(5, Solution::length_of_last_word("Hello World".to_owned()));
+        assert_eq!(4, Solution::length_of_last_word("  fly me   to the moon  ".to_owned()));
+        assert_eq!(6, Solution::length_of_last_word("luffy is still joyboy".to_owned()));
+    }
+}