diff --git a/algorithms_project/algorithms/arrays/two_pointer.py b/algorithms_project/algorithms/arrays/two_pointer.py
index 2b7fd04..a124a37 100644
--- a/algorithms_project/algorithms/arrays/two_pointer.py
+++ b/algorithms_project/algorithms/arrays/two_pointer.py
@@ -30,13 +30,15 @@ def reverserWords(s):
 
 
 class Solution3:
-    def reverseWords_manual1(s):
+    def reverseWords_manual1(sword: str) -> str:
         res = ''
-        for right in range(len(s) + 1):
-            if right == len(s) or s[right] == ' ':
-                res += s[:right][::-1]
-                if right < len(s):
+        left = 0
+        for right in range(len(sword) + 1):
+            if right == len(sword) or sword[right] == ' ':
+                res += sword[left:right][::-1]
+                if right < len(sword):
                     res += ' '
+                left = right + 1
         return res
 
 
diff --git a/algorithms_project/tests/test_arrays/test_two_pointer.py b/algorithms_project/tests/test_arrays/test_two_pointer.py
index 7c19846..45c5cdb 100644
--- a/algorithms_project/tests/test_arrays/test_two_pointer.py
+++ b/algorithms_project/tests/test_arrays/test_two_pointer.py
@@ -1,5 +1,5 @@
 import pytest
-from algorithms.arrays.two_pointer import Solution
+from algorithms.arrays.two_pointer import Solution, Solution2, Solution3
 
 
 @pytest.mark.parametrize("input_str,expected", [
@@ -9,3 +9,16 @@
 ])
 def test_reverse_words(input_str, expected):
     assert Solution.reverseWords_manual(input_str) == expected
+
+
+@pytest.mark.parametrize("input_str,expected", [
+    ("I evol edocteel", "I love leetcode"),
+])
+def test_reverse_words1(input_str, expected):
+    assert Solution2.reverserWords(input_str) == expected
+
+@pytest.mark.parametrize("input_str,expected", [
+    ("Let's take LeetCode contest", "s'teL ekat edoCteeL tsetnoc"),
+])
+def test_reverse_words2(input_str, expected):
+    assert Solution3.reverseWords_manual1(input_str) == expected
\ No newline at end of file