added more test case and type hint

Author: 0APOCALYPSE0

Diff for: strings/title.py

@@ -1,3 +1,35 @@
+def convert_word(word: str) -> str:
+    """
+    Converts a string to capitalized case, preserving the input as is
+
+    >>> convert_word("Aakash")
+    'Aakash'
+
+    >>> convert_word("aakash")
+    'Aakash'
+
+    >>> convert_word("AAKASH")
+    'Aakash'
+
+    >>> convert_word("aAkAsH")
+    'Aakash'
+    """
+
+    """
+    Convert the first character to uppercase if it's lowercase
+    """
+    if 'a' <= word[0] <= 'z':
+        word = chr(ord(word[0]) - 32) + word[1:]
+
+    """
+    Convert the remaining characters to lowercase if they are uppercase
+    """
+    for i in range(1, len(word)):
+        if 'A' <= word[i] <= 'Z':
+            word = word[:i] + chr(ord(word[i]) + 32) + word[i+1:]
+
+    return word
+
 def to_title_case(input_str: str) -> str:
     """
     Converts a string to title case, preserving the input as is
@@ -15,29 +47,12 @@ def to_title_case(input_str: str) -> str:
     'Aakash Giri'
     """
 
-    def convert_word(word):
-        """
-        Convert the first character to uppercase if it's lowercase
-        """
-        if "a" <= word[0] <= "z":
-            word = chr(ord(word[0]) - 32) + word[1:]
-
-        """
-        Convert the remaining characters to lowercase if they are uppercase
-        """
-        for i in range(1, len(word)):
-            if "A" <= word[i] <= "Z":
-                word = word[:i] + chr(ord(word[i]) + 32) + word[i + 1 :]
-
-        return word
-
     words = input_str.split()
     title_case_str = [convert_word(word) for word in words]
 
-    return " ".join(title_case_str)
-
+    return ' '.join(title_case_str)
 
 if __name__ == "__main__":
     from doctest import testmod
 
-    testmod()
+    testmod()