





class    _a  :

  """simple docstring"""


  def __init__(						self:	Union[str, Any]					,  __lowerCamelCase:	Optional[int]			):
      '''simple docstring'''


      UpperCamelCase__:					Optional[int]												=      data
      UpperCamelCase__:					Dict												=      None
      UpperCamelCase__:					Union[str, Any]												=      None






  def __str__(						self:	Dict			):
      '''simple docstring'''


      return F"{self.data}"




class    _a  :

  """simple docstring"""


  def __init__(						self:	List[str]			):
      '''simple docstring'''


      UpperCamelCase__:					str												=      None
      UpperCamelCase__:					Dict												=      None






  def __iter__(						self:	Optional[int]			):
      '''simple docstring'''


      UpperCamelCase__:					int												=      self.head
      while node:
          yield node.data
          UpperCamelCase__:					List[Any]												=      node.next






  def __str__(						self:	List[Any]			):
      '''simple docstring'''


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






  def __len__(						self:	List[Any]			):
      '''simple docstring'''


      return sum(1 for _ in self			)






  def 	UpperCAmelCase_   (						self:	int					,  __lowerCamelCase:	Union[str, Any]			):
      '''simple docstring'''


      self.insert_at_nth(0					,  __lowerCamelCase			)






  def 	UpperCAmelCase_   (						self:	Union[str, Any]					,  __lowerCamelCase:	Any			):
      '''simple docstring'''


      self.insert_at_nth(len(self			)					,  __lowerCamelCase			)






  def 	UpperCAmelCase_   (						self:	str					,  __lowerCamelCase:	int					,  __lowerCamelCase:	str			):
      '''simple docstring'''


      UpperCamelCase__:					str												=      len(self			)

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






  def 	UpperCAmelCase_   (						self:	str			):
      '''simple docstring'''


      return self.delete_at_nth(0			)






  def 	UpperCAmelCase_   (						self:	Tuple			):
      '''simple docstring'''


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






  def 	UpperCAmelCase_   (						self:	Any					,  __lowerCamelCase:	int			):
      '''simple docstring'''


      UpperCamelCase__:					List[str]												=      len(self			)

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






  def 	UpperCAmelCase_   (						self:	Dict					,  __lowerCamelCase:	Optional[Any]			):
      '''simple docstring'''


      UpperCamelCase__:					Tuple												=      self.head

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






  def 	UpperCAmelCase_   (						self:	Optional[Any]			):
      '''simple docstring'''


      return len(self			) == 0



def 							lowerCAmelCase_				(    ):
    UpperCamelCase__:					List[str]												=      DoublyLinkedList()
    assert linked_list.is_empty() is True
    assert str(A_) == ""

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

    linked_list.insert_at_head(0)
    linked_list.insert_at_tail(11)
    assert str(A_) == "->".join(str(A_) 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(A_) == 9
    assert str(A_) == "->".join(str(A_) for i in range(1  ,10))


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

   testmod()








from typing import TYPE_CHECKING

from ...utils import OptionalDependencyNotAvailable, _LazyModule, is_torch_available


A__:  List[str]       					=					{
    '''configuration_wav2vec2_conformer''': [
        '''WAV2VEC2_CONFORMER_PRETRAINED_CONFIG_ARCHIVE_MAP''',
        '''Wav2Vec2ConformerConfig''',
    ],
}


try:
   if not is_torch_available():
      raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
   pass
else:
   A__:  int       					=					[
       '''WAV2VEC2_CONFORMER_PRETRAINED_MODEL_ARCHIVE_LIST''',
       '''Wav2Vec2ConformerForAudioFrameClassification''',
       '''Wav2Vec2ConformerForCTC''',
       '''Wav2Vec2ConformerForPreTraining''',
       '''Wav2Vec2ConformerForSequenceClassification''',
       '''Wav2Vec2ConformerForXVector''',
       '''Wav2Vec2ConformerModel''',
       '''Wav2Vec2ConformerPreTrainedModel''',
   ]

if TYPE_CHECKING:
   from .configuration_wavaveca_conformer import (
       WAV2VEC2_CONFORMER_PRETRAINED_CONFIG_ARCHIVE_MAP,
       WavaVecaConformerConfig,
   )

   try:
      if not is_torch_available():
         raise OptionalDependencyNotAvailable()
   except OptionalDependencyNotAvailable:
      pass
   else:
      from .modeling_wavaveca_conformer import (
          WAV2VEC2_CONFORMER_PRETRAINED_MODEL_ARCHIVE_LIST,
          WavaVecaConformerForAudioFrameClassification,
          WavaVecaConformerForCTC,
          WavaVecaConformerForPreTraining,
          WavaVecaConformerForSequenceClassification,
          WavaVecaConformerForXVector,
          WavaVecaConformerModel,
          WavaVecaConformerPreTrainedModel,
      )

else:
   import sys

   A__:  Dict       					=					_LazyModule(__name__, globals()['''__file__'''], _import_structure, module_spec=__spec__)

