from __future__ import annotations






class 		_lowerCamelCase		:
    def __init__(	self			,			lowerCAmelCase = 0 )							->       List[str]:
     SCREAMING_SNAKE_CASE__: Tuple=   key
    def     UpperCamelCase_					(	self			,			lowerCAmelCase			,			lowerCAmelCase )							->       list[str]:
     assert isinstance(lowerCAmelCase			,			lowerCAmelCase ) and isinstance(lowerCAmelCase			,			lowerCAmelCase )

     SCREAMING_SNAKE_CASE__: Union[str, Any]=   key or self.__key or 1

     # make sure key is an appropriate size
     key %= 255

     return [chr(ord(lowerCAmelCase ) ^ key ) for ch in content]
    def     UpperCamelCase_					(	self			,			lowerCAmelCase			,			lowerCAmelCase )							->       list[str]:
     assert isinstance(lowerCAmelCase			,			lowerCAmelCase ) and isinstance(lowerCAmelCase			,			lowerCAmelCase )

     SCREAMING_SNAKE_CASE__: Dict=   key or self.__key or 1

     # make sure key is an appropriate size
     key %= 255

     return [chr(ord(lowerCAmelCase ) ^ key ) for ch in content]
    def     UpperCamelCase_					(	self			,			lowerCAmelCase			,			lowerCAmelCase = 0 )							->       str:
     assert isinstance(lowerCAmelCase			,			lowerCAmelCase ) and isinstance(lowerCAmelCase			,			lowerCAmelCase )

     SCREAMING_SNAKE_CASE__: Any=   key or self.__key or 1

     # make sure key can be any size
     while key > 255:
      key -= 255

     # This will be returned
     SCREAMING_SNAKE_CASE__: Union[str, Any]=   ''''''

     for ch in content:
      ans += chr(ord(lowerCAmelCase ) ^ key )

     return ans
    def     UpperCamelCase_					(	self			,			lowerCAmelCase			,			lowerCAmelCase = 0 )							->       str:
     assert isinstance(lowerCAmelCase			,			lowerCAmelCase ) and isinstance(lowerCAmelCase			,			lowerCAmelCase )

     SCREAMING_SNAKE_CASE__: Union[str, Any]=   key or self.__key or 1

     # make sure key can be any size
     while key > 255:
      key -= 255

     # This will be returned
     SCREAMING_SNAKE_CASE__: Optional[Any]=   ''''''

     for ch in content:
      ans += chr(ord(lowerCAmelCase ) ^ key )

     return ans
    def     UpperCamelCase_					(	self			,			lowerCAmelCase			,			lowerCAmelCase = 0 )							->       bool:
     assert isinstance(lowerCAmelCase			,			lowerCAmelCase ) and isinstance(lowerCAmelCase			,			lowerCAmelCase )

     try:
      with open(lowerCAmelCase ) as fin, open('''encrypt.out'''			,			'''w+''' ) as fout:
       # actual encrypt-process
       for line in fin:
        fout.write(self.encrypt_string(lowerCAmelCase			,			lowerCAmelCase ) )

     except OSError:
      return False

     return True



    def     UpperCamelCase_					(	self			,			lowerCAmelCase			,			lowerCAmelCase )							->       bool:
     assert isinstance(lowerCAmelCase			,			lowerCAmelCase ) and isinstance(lowerCAmelCase			,			lowerCAmelCase )

     try:
      with open(lowerCAmelCase ) as fin, open('''decrypt.out'''			,			'''w+''' ) as fout:
       # actual encrypt-process
       for line in fin:
        fout.write(self.decrypt_string(lowerCAmelCase			,			lowerCAmelCase ) )

     except OSError:
      return False

     return True


# Tests
# crypt = XORCipher()
# key = 67

# # test encrypt
# print(crypt.encrypt("hallo welt",key))
# # test decrypt
# print(crypt.decrypt(crypt.encrypt("hallo welt",key), key))

# # test encrypt_string
# print(crypt.encrypt_string("hallo welt",key))

# # test decrypt_string
# print(crypt.decrypt_string(crypt.encrypt_string("hallo welt",key),key))

# if (crypt.encrypt_file("test.txt",key)):
#       print("encrypt successful")
# else:
#       print("encrypt unsuccessful")

# if (crypt.decrypt_file("encrypt.out",key)):
#       print("decrypt successful")
# else:
#       print("decrypt unsuccessful")





from __future__ import annotations






def 						a__			(				A__,      A__ = None,      A__ = None				):
			if start is None:
						SCREAMING_SNAKE_CASE_		:     List[str]					=					0

			if end is None:
						SCREAMING_SNAKE_CASE_		:     Optional[Any]					=					len(A__				) - 1

			if start >= end:
						return

			SCREAMING_SNAKE_CASE_		:     Tuple					=					(start + end) // 2

			slowsort(A__,      A__,      A__				)
			slowsort(A__,      mid + 1,      A__				)

			if sequence[end] < sequence[mid]:
						SCREAMING_SNAKE_CASE_		,      SCREAMING_SNAKE_CASE_		:     Optional[Any]					=					sequence[mid], sequence[end]

			slowsort(A__,      A__,      end - 1				)


if __name__ == "__main__":
				from doctest import testmod

				testmod()





