'''simple docstring'''

def __UpperCamelCase(   _A					:				str  ,			_A					:				str    ):
   '''simple docstring'''







   if len(__UpperCamelCase    ) != len(__UpperCamelCase    ):
      raise ValueError('''String lengths must match!'''    )

   UpperCAmelCase__							:				Any   				=  0

   for chara, chara in zip(__UpperCamelCase  ,			__UpperCamelCase    ):
      if chara != chara:
         count += 1

   return count


if __name__ == "__main__":
  import doctest

  doctest.testmod()





'''simple docstring'''

def __UpperCamelCase(   _A					:				str  ,			_A					:				str    ):
   '''simple docstring'''
   UpperCAmelCase__							:				int   				=  len(_A    )
   UpperCAmelCase__							:				int   				=  len(_A    )
   UpperCAmelCase__							:				int   				=  (
       first_str_length if first_str_length > second_str_length else second_str_length
   )
   UpperCAmelCase__							:				list   				=  []
   for char_count in range(_A    ):
      if char_count < first_str_length:
         output_list.append(first_str[char_count]    )
      if char_count < second_str_length:
         output_list.append(second_str[char_count]    )
   return "".join(_A    )


if __name__ == "__main__":
  print(alternative_string_arrange('AB', 'XYZ'), end=' ')




