From d74023736a7ac7dee1a36c2a28753f654885e410 Mon Sep 17 00:00:00 2001
From: momstrosity <momstrosity@users.noreply.github.com>
Date: Wed, 21 May 2025 10:06:27 -0300
Subject: [PATCH 1/4] Start draft PR


From e188971d8ed237cc339901094b812bc5ab01744a Mon Sep 17 00:00:00 2001
From: momstrosity <momstrosity@users.noreply.github.com>
Date: Wed, 21 May 2025 10:06:39 -0300
Subject: [PATCH 2/4] Add string reversal function with type checking and
 docstring

---
 src/string_reversal.py | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 src/string_reversal.py

diff --git a/src/string_reversal.py b/src/string_reversal.py
new file mode 100644
index 0000000..8767d51
--- /dev/null
+++ b/src/string_reversal.py
@@ -0,0 +1,19 @@
+def reverse_string(input_string: str) -> str:
+    """
+    Reverse a given string.
+
+    Args:
+        input_string (str): The string to be reversed.
+
+    Returns:
+        str: The reversed string.
+
+    Raises:
+        TypeError: If the input is not a string.
+    """
+    # Check for invalid input type
+    if not isinstance(input_string, str):
+        raise TypeError("Input must be a string")
+    
+    # Return the reversed string
+    return input_string[::-1]
\ No newline at end of file

From 28586f57a681f56991cce56e6879b6bd0e9b1726 Mon Sep 17 00:00:00 2001
From: momstrosity <momstrosity@users.noreply.github.com>
Date: Wed, 21 May 2025 10:06:48 -0300
Subject: [PATCH 3/4] Add comprehensive tests for string reversal function

---
 tests/test_string_reversal.py | 38 +++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 tests/test_string_reversal.py

diff --git a/tests/test_string_reversal.py b/tests/test_string_reversal.py
new file mode 100644
index 0000000..dc3503f
--- /dev/null
+++ b/tests/test_string_reversal.py
@@ -0,0 +1,38 @@
+import pytest
+from src.string_reversal import reverse_string
+
+def test_reverse_string_basic():
+    """Test basic string reversal."""
+    assert reverse_string("hello") == "olleh"
+    assert reverse_string("python") == "nohtyp"
+
+def test_reverse_string_empty():
+    """Test reversal of an empty string."""
+    assert reverse_string("") == ""
+
+def test_reverse_string_single_char():
+    """Test reversal of a single character string."""
+    assert reverse_string("a") == "a"
+
+def test_reverse_string_with_spaces():
+    """Test reversal of string with spaces."""
+    assert reverse_string("hello world") == "dlrow olleh"
+
+def test_reverse_string_with_special_chars():
+    """Test reversal of string with special characters."""
+    assert reverse_string("a1b2c3!@#") == "#@!3c2b1a"
+
+def test_reverse_string_unicode():
+    """Test reversal of string with unicode characters."""
+    assert reverse_string("こんにちは") == "はちにんこ"
+
+def test_reverse_string_invalid_input():
+    """Test that a TypeError is raised for non-string inputs."""
+    with pytest.raises(TypeError, match="Input must be a string"):
+        reverse_string(123)
+    
+    with pytest.raises(TypeError, match="Input must be a string"):
+        reverse_string(None)
+    
+    with pytest.raises(TypeError, match="Input must be a string"):
+        reverse_string(["hello"])
\ No newline at end of file

From 21d38c335e94a537ee4cbc69532a1f86a9105199 Mon Sep 17 00:00:00 2001
From: momstrosity <momstrosity@users.noreply.github.com>
Date: Wed, 21 May 2025 10:07:30 -0300
Subject: [PATCH 4/4] Implement string reversal using manual character swapping

---
 .../string_reversal.cpython-312.pyc           | Bin 0 -> 738 bytes
 src/string_reversal.py                        |  20 +++++++++++++++---
 ...ring_reversal.cpython-312-pytest-8.3.5.pyc | Bin 0 -> 6898 bytes
 3 files changed, 17 insertions(+), 3 deletions(-)
 create mode 100644 src/__pycache__/string_reversal.cpython-312.pyc
 create mode 100644 tests/__pycache__/test_string_reversal.cpython-312-pytest-8.3.5.pyc

diff --git a/src/__pycache__/string_reversal.cpython-312.pyc b/src/__pycache__/string_reversal.cpython-312.pyc
new file mode 100644
index 0000000000000000000000000000000000000000..51816da7c1db6f57832d3dfea96a46bf40a92f92
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diff --git a/src/string_reversal.py b/src/string_reversal.py
index 8767d51..3650d4f 100644
--- a/src/string_reversal.py
+++ b/src/string_reversal.py
@@ -1,6 +1,6 @@
 def reverse_string(input_string: str) -> str:
     """
-    Reverse a given string.
+    Reverse a given string using a manual character-by-character reversal approach.
 
     Args:
         input_string (str): The string to be reversed.
@@ -15,5 +15,19 @@ def reverse_string(input_string: str) -> str:
     if not isinstance(input_string, str):
         raise TypeError("Input must be a string")
     
-    # Return the reversed string
-    return input_string[::-1]
\ No newline at end of file
+    # Handle empty string case
+    if not input_string:
+        return ""
+    
+    # Convert string to list of characters and reverse manually
+    char_list = list(input_string)
+    left, right = 0, len(char_list) - 1
+    
+    while left < right:
+        # Swap characters
+        char_list[left], char_list[right] = char_list[right], char_list[left]
+        left += 1
+        right -= 1
+    
+    # Convert back to string
+    return ''.join(char_list)
\ No newline at end of file
diff --git a/tests/__pycache__/test_string_reversal.cpython-312-pytest-8.3.5.pyc b/tests/__pycache__/test_string_reversal.cpython-312-pytest-8.3.5.pyc
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