diff --git a/src/my_project/interviews/top_150_questions_round_20/length_of_last_word.py b/src/my_project/interviews/top_150_questions_round_20/length_of_last_word.py
new file mode 100644
index 00000000..12a2640a
--- /dev/null
+++ b/src/my_project/interviews/top_150_questions_round_20/length_of_last_word.py
@@ -0,0 +1,9 @@
+from typing import List, Union, Collection, Mapping, Optional
+from abc import ABC, abstractmethod
+
+class Solution:
+    def lengthOfLastWord(self, s: str) -> int:
+
+        lst_s = s.split()
+
+        return len(lst_s[-1])
\ No newline at end of file
diff --git a/tests/test_150_questions_round_20/test_length_of_last_word_round_20.py b/tests/test_150_questions_round_20/test_length_of_last_word_round_20.py
new file mode 100644
index 00000000..6ebda790
--- /dev/null
+++ b/tests/test_150_questions_round_20/test_length_of_last_word_round_20.py
@@ -0,0 +1,11 @@
+import unittest
+from src.my_project.interviews.top_150_questions_round_20\
+.length_of_last_word import Solution
+
+class LengthLastWordTestCase(unittest.TestCase):
+
+    def test_length_last_word(self):
+        solution = Solution()
+        output = solution.lengthOfLastWord(s="Hello World")
+        target = 5 
+        self.assertEqual(output, target)
\ No newline at end of file