Add Title Case Conversion

Author: 0APOCALYPSE0

strings/title.py

@@ -0,0 +1,42 @@
+def to_title_case(input_str: str) -> str:
+    """
+    Converts a string to title case, preserving the input as is
+
+    >>> to_title_case("Aakash Giri")
+    'Aakash Giri'
+
+    >>> to_title_case("aakash giri")
+    'Aakash Giri'
+
+    >>> to_title_case("AAKASH GIRI")
+    'Aakash Giri'
+
+    >>> to_title_case("aAkAsH gIrI")
+    '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)
+
+if __name__ == "__main__":
+    from doctest import testmod
+
+    testmod()