



'''simple docstring'''





import random
import sys

A			:   Dict			=      """ABCDEFGHIJKLMNOPQRSTUVWXYZ"""
def 		_a   (  ):
   snake_case   :							str						  =input('''Enter message: '''							)
   snake_case   :							Dict						  ='''LFWOAYUISVKMNXPBDCRJTQEGHZ'''
   snake_case   :							Optional[Any]						  =input('''Encrypt/Decrypt [e/d]: '''							)

   check_valid_key(lowerCamelCase_							)

   if resp.lower().startswith('''e'''							):
      snake_case   :							Optional[int]						  ='''encrypt'''
      snake_case   :							int						  =encrypt_message(lowerCamelCase_					,						lowerCamelCase_							)
   elif resp.lower().startswith('''d'''							):
      snake_case   :							Optional[Any]						  ='''decrypt'''
      snake_case   :							Union[str, Any]						  =decrypt_message(lowerCamelCase_					,						lowerCamelCase_							)

   print(F'''\n{mode.title()}ion: \n{translated}'''							)
def 		_a   (  lowerCamelCase_							):
   snake_case   :							str						  =list(lowerCamelCase_							)
   snake_case   :							Union[str, Any]						  =list(lowerCamelCase_							)
   key_list.sort()
   letters_list.sort()

   if key_list != letters_list:
      sys.exit('''Error in the key or symbol set.'''							)
def 		_a   (  lowerCamelCase_					,						lowerCamelCase_							):
   return translate_message(lowerCamelCase_					,						lowerCamelCase_					,						'''encrypt'''							)
def 		_a   (  lowerCamelCase_					,						lowerCamelCase_							):
   return translate_message(lowerCamelCase_					,						lowerCamelCase_					,						'''decrypt'''							)
def 		_a   (  lowerCamelCase_					,						lowerCamelCase_					,						lowerCamelCase_							):
   snake_case   :							str						  =''''''
   snake_case   :							int						  =LETTERS
   snake_case   :							Any						  =key

   if mode == "decrypt":
      snake_case  ,    snake_case   :							Optional[int]						  =chars_b, chars_a

   for symbol in message:
      if symbol.upper() in chars_a:
         snake_case   :							Dict						  =chars_a.find(symbol.upper()							)
         if symbol.isupper():
            translated += chars_b[sym_index].upper()
         else:
            translated += chars_b[sym_index].lower()
      else:
         translated += symbol

   return translated
def 		_a   (  ):
   snake_case   :							Optional[int]						  =list(lowerCamelCase_							)
   random.shuffle(lowerCamelCase_							)
   return "".join(lowerCamelCase_							)


if __name__ == "__main__":
      main()










'''simple docstring'''





class 							lowerCAmelCase_		:





    def __init__(    self    :    List[Any],    _snake_case    :    Any     ):



       '''simple docstring'''







       snake_case   :							Tuple						  =data
       snake_case   :							int						  =None
       snake_case   :							List[Any]						  =None






    def __str__(    self    :    List[str]     ):



       '''simple docstring'''







       return f'''{self.data}'''





class 							lowerCAmelCase_		:





    def __init__(    self    :    Optional[int]     ):



       '''simple docstring'''







       snake_case   :							Optional[int]						  =None
       snake_case   :							int						  =None





    def __iter__(    self    :    List[str]     ):



       '''simple docstring'''







       snake_case   :							str						  =self.head
       while node:
          yield node.data
          snake_case   :							Union[str, Any]						  =node.next





    def __str__(    self    :    List[str]     ):



       '''simple docstring'''







       return "->".join([str(_snake_case     ) for item in self]     )





    def __len__(    self    :    Dict     ):



       '''simple docstring'''







       return sum(1 for _ in self     )





    def 					__snake_case       (    self    :    List[Any],    _snake_case    :    str     ):



       '''simple docstring'''







       self.insert_at_nth(0,    _snake_case     )





    def 					__snake_case       (    self    :    Optional[Any],    _snake_case    :    Dict     ):



       '''simple docstring'''







       self.insert_at_nth(len(self     ),    _snake_case     )





    def 					__snake_case       (    self    :    Union[str, Any],    _snake_case    :    int,    _snake_case    :    Dict     ):



       '''simple docstring'''







       snake_case   :							Optional[int]						  =len(self     )

       if not 0 <= index <= length:
          raise IndexError('''list index out of range'''     )
       snake_case   :							int						  =Node(_snake_case     )
       if self.head is None:
          snake_case   :							Optional[Any]						  =new_node
       elif index == 0:
          snake_case   :							int						  =new_node
          snake_case   :							Union[str, Any]						  =self.head
          snake_case   :							Optional[int]						  =new_node
       elif index == length:
          snake_case   :							Dict						  =new_node
          snake_case   :							int						  =self.tail
          snake_case   :							Union[str, Any]						  =new_node
       else:
          snake_case   :							Optional[int]						  =self.head
          for _ in range(0,    _snake_case     ):
             snake_case   :							Union[str, Any]						  =temp.next
          snake_case   :							int						  =new_node
          snake_case   :							Union[str, Any]						  =temp.previous
          snake_case   :							List[Any]						  =temp
          snake_case   :							int						  =new_node





    def 					__snake_case       (    self    :    str     ):



       '''simple docstring'''







       return self.delete_at_nth(0     )





    def 					__snake_case       (    self    :    List[Any]     ):



       '''simple docstring'''







       return self.delete_at_nth(len(self     ) - 1     )





    def 					__snake_case       (    self    :    Union[str, Any],    _snake_case    :    int     ):



       '''simple docstring'''







       snake_case   :							Dict						  =len(self     )

       if not 0 <= index <= length - 1:
          raise IndexError('''list index out of range'''     )
       snake_case   :							List[str]						  =self.head  # default first node
       if length == 1:
          snake_case   :							Union[str, Any]						  =None
       elif index == 0:
          snake_case   :							Tuple						  =self.head.next
          snake_case   :							Optional[int]						  =None
       elif index == length - 1:
          snake_case   :							Union[str, Any]						  =self.tail
          snake_case   :							List[str]						  =self.tail.previous
          snake_case   :							int						  =None
       else:
          snake_case   :							int						  =self.head
          for _ in range(0,    _snake_case     ):
             snake_case   :							Any						  =temp.next
          snake_case   :							List[Any]						  =temp
          snake_case   :							Optional[Any]						  =temp.previous
          snake_case   :							int						  =temp.next
       return delete_node.data





    def 					__snake_case       (    self    :    List[Any],    _snake_case    :    Tuple     ):



       '''simple docstring'''







       snake_case   :							List[Any]						  =self.head

       while current.data != data:  # Find the position to delete
          if current.next:
             snake_case   :							Any						  =current.next
          else:  # We have reached the end an no value matches
             raise ValueError('''No data matching given value'''     )

       if current == self.head:
          self.delete_head()

       elif current == self.tail:
          self.delete_tail()

       else:  # Before: 1 <--> 2(current) <--> 3
          snake_case   :							Optional[int]						  =current.next  # 1 --> 3
          snake_case   :							List[Any]						  =current.previous  # 1 <--> 3
       return data






    def 					__snake_case       (    self    :    Any     ):



       '''simple docstring'''







       return len(self     ) == 0




def 		_a   (  ):
   snake_case   :							Optional[Any]						  =DoublyLinkedList()
   assert linked_list.is_empty() is True
   assert str(lowerCamelCase_							) == ""

   try:
      linked_list.delete_head()
      raise AssertionError  # This should not happen.
   except IndexError:
      assert True  # This should happen.

   try:
      linked_list.delete_tail()
      raise AssertionError  # This should not happen.
   except IndexError:
      assert True  # This should happen.

   for i in range(10							):
      assert len(lowerCamelCase_							) == i
      linked_list.insert_at_nth(lowerCamelCase_					,						i + 1							)
   assert str(lowerCamelCase_							) == "->".join(str(lowerCamelCase_							) for i in range(1					,						11							)							)

   linked_list.insert_at_head(0							)
   linked_list.insert_at_tail(11							)
   assert str(lowerCamelCase_							) == "->".join(str(lowerCamelCase_							) for i in range(0					,						12							)							)

   assert linked_list.delete_head() == 0
   assert linked_list.delete_at_nth(9							) == 10
   assert linked_list.delete_tail() == 11
   assert len(lowerCamelCase_							) == 9
   assert str(lowerCamelCase_							) == "->".join(str(lowerCamelCase_							) for i in range(1					,						10							)							)


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

      testmod()





