style: Add type annotation

Author: yyossy5

src/anagram.py

@@ -6,7 +6,7 @@
 
 
 # Method 1: Using Sorting
-def are_anagrams_sorting(str1, str2):
+def are_anagrams_sorting(str1: str, str2: str) -> bool:
     """
     Determines if two strings are anagrams by sorting.
     """
@@ -19,7 +19,7 @@ def are_anagrams_sorting(str1, str2):
 
 
 # Method 2: Using Character Count with defaultdict for both strings
-def are_anagrams_dict(str1, str2):
+def are_anagrams_dict(str1: str, str2: str) -> bool:
     """Determines if two strings are anagrams by counting characters with defaultdict for both strings."""
     # Remove whitespace and convert to lowercase for case-insensitive comparison
     str1 = str1.replace(" ", "").lower()
@@ -43,7 +43,7 @@ def are_anagrams_dict(str1, str2):
 
 
 # Method 3: Using Character Count with Array (assuming ASCII characters)
-def are_anagrams_array(str1, str2):
+def are_anagrams_array(str1: str, str2: str) -> bool:
     """Determines if two strings are anagrams by counting characters with an array.
 
     Assumes only ASCII characters.

test/test_anagram.py

@@ -1,4 +1,5 @@
 """Test cases for the anagram module."""
+# mypy: ignore-errors
 
 import unittest
 
@@ -30,7 +31,7 @@ def test_are_anagrams_sorting(self):
                     f"Failed for {str1} and {str2}",
                 )
 
-    def test_are_anagrams_dict(self):
+    def test_are_anagrams_dict(self) -> None:
         """Test the are_anagrams_dict function."""
         for str1, str2, expected in self.test_cases:
             with self.subTest(str1=str1, str2=str2):
@@ -40,7 +41,7 @@ def test_are_anagrams_dict(self):
                     f"Failed for {str1} and {str2}",
                 )
 
-    def test_are_anagrams_array(self):
+    def test_are_anagrams_array(self) -> None:
         """Test the are_anagrams_array function."""
         for str1, str2, expected in self.test_cases:
             with self.subTest(str1=str1, str2=str2):