

'''simple docstring'''







import numpy as np

_lowerCamelCase    =  [
    ['a', 'b', 'c', 'd', 'e'],
    ['f', 'g', 'h', 'i', 'k'],
    ['l', 'm', 'n', 'o', 'p'],
    ['q', 'r', 's', 't', 'u'],
    ['v', 'w', 'x', 'y', 'z'],
]
class 					__a   :

						def __init__(		self	:						str)						->List[Any]:

							"""simple docstring"""



							_lowercase							=     np.array(lowercase_)

						def 	_UpperCAmelCase							(		self	:						Optional[int]    ,			lowercase__	:						List[Any])						->Union[str, Any]:

							"""simple docstring"""



							_lowercase							=     np.where(letter == self.SQUARE)
							_lowercase							=     np.concatenate([indexa + 1, indexa + 1])
							return indexes

						def 	_UpperCAmelCase							(		self	:						List[str]    ,			lowercase__	:						Tuple    ,			lowercase__	:						str)						->Any:

							"""simple docstring"""



							return self.SQUARE[indexa - 1, indexa - 1]

						def 	_UpperCAmelCase							(		self	:						Dict    ,			lowercase__	:						List[str])						->Tuple:

							"""simple docstring"""



							_lowercase							=     message.lower()
							_lowercase							=     message.replace("""j"""    ,			"""i""")

							_lowercase							=     ""
							for letter_index in range(len(lowercase_)):
								if message[letter_index] != " ":
									_lowercase							=     self.letter_to_numbers(message[letter_index])
									_lowercase							=     encoded_message + str(numbers[0]) + str(numbers[1])
								elif message[letter_index] == " ":
									_lowercase							=     encoded_message + " "

							return encoded_message


						def 	_UpperCAmelCase							(		self	:						int    ,			lowercase__	:						int)						->Tuple:

							"""simple docstring"""



							_lowercase							=     message.replace(""" """    ,			"""  """)
							_lowercase							=     ""
							for numbers_index in range(int(len(lowercase_) / 2)):
								if message[numbers_index * 2] != " ":
									_lowercase							=     message[numbers_index * 2]
									_lowercase							=     message[numbers_index * 2 + 1]

									_lowercase							=     self.numbers_to_letter(int(lowercase_)    ,			int(lowercase_))
									_lowercase							=     decoded_message + letter
								elif message[numbers_index * 2] == " ":
									_lowercase							=     decoded_message + " "

							return decoded_message






"""simple docstring"""





class A_      :




  '''simple docstring'''







  def __init__(						self							,  lowercase_    ):

     """simple docstring"""
     UpperCAmelCase_   :   str     	=       data
     UpperCAmelCase_   :   str     	=       None
     UpperCAmelCase_   :   List[Any]     	=       None







  def __str__(						self    ):

     """simple docstring"""
     return F"""{self.data}"""




class A_      :




  '''simple docstring'''







  def __init__(						self    ):

     """simple docstring"""
     UpperCAmelCase_   :   Tuple     	=       None
     UpperCAmelCase_   :   List[str]     	=       None







  def __iter__(						self    ):

     """simple docstring"""
     UpperCAmelCase_   :   Optional[int]     	=       self.head
     while node:
        yield node.data
        UpperCAmelCase_   :   Optional[Any]     	=       node.next







  def __str__(						self    ):

     """simple docstring"""
     return "->".join([str(lowercase_    ) for item in self]    )







  def __len__(						self    ):

     """simple docstring"""
     return sum(1 for _ in self    )







  def 			UpperCamelCase__   (						self							,  lowercase_    ):

     """simple docstring"""
     self.insert_at_nth(0							,  lowercase_    )







  def 			UpperCamelCase__   (						self							,  lowercase_    ):

     """simple docstring"""
     self.insert_at_nth(len(self    )							,  lowercase_    )







  def 			UpperCamelCase__   (						self							,  lowercase_							,  lowercase_    ):

     """simple docstring"""
     UpperCAmelCase_   :   int     	=       len(self    )

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







  def 			UpperCamelCase__   (						self    ):

     """simple docstring"""
     return self.delete_at_nth(0    )







  def 			UpperCamelCase__   (						self    ):

     """simple docstring"""
     return self.delete_at_nth(len(self    ) - 1    )







  def 			UpperCamelCase__   (						self							,  lowercase_    ):

     """simple docstring"""
     UpperCAmelCase_   :   int     	=       len(self    )

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







  def 			UpperCamelCase__   (						self							,  lowercase_    ):

     """simple docstring"""
     UpperCAmelCase_   :   Tuple     	=       self.head

     while current.data != data:  # Find the position to delete
        if current.next:
           UpperCAmelCase_   :   List[str]     	=       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
        UpperCAmelCase_   :   str     	=       current.next  # 1 --> 3
        UpperCAmelCase_   :   Optional[Any]     	=       current.previous  # 1 <--> 3
     return data







  def 			UpperCamelCase__   (						self    ):

     """simple docstring"""
     return len(self    ) == 0







def       __a	(						):
   UpperCAmelCase_   :   Dict     	=       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()


