[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

Diff for: strings/alternative_string_arrange.py

@@ -1,11 +1,11 @@
 def alternative_string_arrange(first_str: str, second_str: str) -> str:
     """
     Return the alternative arrangements of the two strings.
-    
-    This function alternates characters from two input strings. If one string 
-    is longer, the remaining characters will be appended to the end of the 
+
+    This function alternates characters from two input strings. If one string
+    is longer, the remaining characters will be appended to the end of the
     resulting string.
-    
+
     :param first_str: The first string to arrange.
     :param second_str: The second string to arrange.
     :return: A new string with alternating characters from the input strings.
@@ -21,14 +21,14 @@ def alternative_string_arrange(first_str: str, second_str: str) -> str:
     """
     max_length: int = max(len(first_str), len(second_str))
     result_chars: list = []
-    
+
     for i in range(max_length):
         if i < len(first_str):
             result_chars.append(first_str[i])
         if i < len(second_str):
             result_chars.append(second_str[i])
-    
-    return ''.join(result_chars)
+
+    return "".join(result_chars)
 
 
 if __name__ == "__main__":