




"""simple docstring"""
class  _SCREAMING_SNAKE_CASE       :



 '''simple docstring'''





 def __init__(self					,     lowerCAmelCase__   ):

  '''simple docstring'''







  _UpperCamelCase      :	Optional[int]					      =  data
  _UpperCamelCase      :	Optional[Any]					      =  None
  _UpperCamelCase      :	Tuple					      =  None






 def __str__(self   ):

  '''simple docstring'''







  return F"{self.data}"







class  _SCREAMING_SNAKE_CASE       :



 '''simple docstring'''





 def __init__(self   ):

  '''simple docstring'''







  _UpperCamelCase      :	Optional[Any]					      =  None
  _UpperCamelCase      :	Optional[Any]					      =  None






 def __iter__(self   ):

  '''simple docstring'''







  _UpperCamelCase      :	Optional[Any]					      =  self.head
  while node:
   yield node.data
   _UpperCamelCase      :	Any					      =  node.next






 def __str__(self   ):

  '''simple docstring'''







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






 def __len__(self   ):

  '''simple docstring'''







  return sum(1 for _ in self   )






 def lowercase_      (self					,     lowerCAmelCase__   ):

  '''simple docstring'''







  self.insert_at_nth(0					,     __SCREAMING_SNAKE_CASE   )






 def lowercase_      (self					,     lowerCAmelCase__   ):

  '''simple docstring'''







  self.insert_at_nth(len(self   )					,     __SCREAMING_SNAKE_CASE   )






 def lowercase_      (self					,     lowerCAmelCase__					,     lowerCAmelCase__   ):

  '''simple docstring'''







  _UpperCamelCase      :	int					      =  len(self   )

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






 def lowercase_      (self   ):

  '''simple docstring'''







  return self.delete_at_nth(0   )






 def lowercase_      (self   ):

  '''simple docstring'''







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






 def lowercase_      (self					,     lowerCAmelCase__   ):

  '''simple docstring'''







  _UpperCamelCase      :	int					      =  len(self   )

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






 def lowercase_      (self					,     lowerCAmelCase__   ):

  '''simple docstring'''







  _UpperCamelCase      :	Tuple					      =  self.head

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






 def lowercase_      (self   ):

  '''simple docstring'''







  return len(self   ) == 0






def 				__lowerCAmelCase					(					)    ->       List[Any]:
 _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()




from typing import TYPE_CHECKING

from ...utils import (
    OptionalDependencyNotAvailable,
    _LazyModule,
    is_tf_available,
    is_torch_available,
    is_vision_available,
)


_SCREAMING_SNAKE_CASE:    Optional[Any]     						=							{
    '''configuration_sam''': [
        '''SAM_PRETRAINED_CONFIG_ARCHIVE_MAP''',
        '''SamConfig''',
        '''SamMaskDecoderConfig''',
        '''SamPromptEncoderConfig''',
        '''SamVisionConfig''',
    ],
    '''processing_sam''': ['''SamProcessor'''],
}


try:
			if not is_torch_available():
						raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
			pass
else:
			_SCREAMING_SNAKE_CASE:    Dict     						=							[
			    '''SAM_PRETRAINED_MODEL_ARCHIVE_LIST''',
			    '''SamModel''',
			    '''SamPreTrainedModel''',
			]
try:
			if not is_tf_available():
						raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
			pass
else:
			_SCREAMING_SNAKE_CASE:    Optional[Any]     						=							[
			    '''TF_SAM_PRETRAINED_MODEL_ARCHIVE_LIST''',
			    '''TFSamModel''',
			    '''TFSamPreTrainedModel''',
			]
try:
			if not is_vision_available():
						raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
			pass
else:
			_SCREAMING_SNAKE_CASE:    List[Any]     						=							['''SamImageProcessor''']


if TYPE_CHECKING:
			from .configuration_sam import (
			    SAM_PRETRAINED_CONFIG_ARCHIVE_MAP,
			    SamConfig,
			    SamMaskDecoderConfig,
			    SamPromptEncoderConfig,
			    SamVisionConfig,
			)
			from .processing_sam import SamProcessor

			try:
						if not is_torch_available():
									raise OptionalDependencyNotAvailable()
			except OptionalDependencyNotAvailable:
						pass
			else:
						from .modeling_sam import SAM_PRETRAINED_MODEL_ARCHIVE_LIST, SamModel, SamPreTrainedModel

			try:
						if not is_tf_available():
									raise OptionalDependencyNotAvailable()
			except OptionalDependencyNotAvailable:
						pass
			else:
						from .modeling_tf_sam import TF_SAM_PRETRAINED_MODEL_ARCHIVE_LIST, TFSamModel, TFSamPreTrainedModel

			try:
						if not is_vision_available():
									raise OptionalDependencyNotAvailable()
			except OptionalDependencyNotAvailable:
						pass
			else:
						from .image_processing_sam import SamImageProcessor

else:
			import sys

			_SCREAMING_SNAKE_CASE:    Union[str, Any]     						=							_LazyModule(__name__, globals()['''__file__'''], _import_structure, module_spec=__spec__)

