
'''simple docstring'''






from typing import Any

class 			UpperCAmelCase__    :



    def __init__(						self   :							Any,__A   :							Any  ):
          _lowerCamelCase					: Dict		    = data
          _lowerCamelCase					: Tuple		    = None



    def __repr__(						self   :							int  ):
          return f'Node({self.data})'


class 			UpperCAmelCase__    :



    def __init__(						self   :							int  ):
          _lowerCamelCase					: Tuple		    = None



    def __iter__(						self   :							Optional[Any]  ):
          _lowerCamelCase					: int		    = self.head
          while node:
                yield node.data
                _lowerCamelCase					: Optional[Any]		    = node.next



    def __len__(						self   :							int  ):
          return sum(1 for _ in self  )



    def __repr__(						self   :							Union[str, Any]  ):
          return "->".join([str(__A  ) for item in self]  )



    def __getitem__(						self   :							Optional[Any],__A   :							int  ):
          if not 0 <= index < len(self  ):
                raise ValueError("list index out of range."  )
          for i, node in enumerate(self  ):
                if i == index:
                      return node
          return None



    def __setitem__(						self   :							Union[str, Any],__A   :							int,__A   :							Any  ):
          if not 0 <= index < len(self  ):
                raise ValueError("list index out of range."  )
          _lowerCamelCase					: Any		    = self.head
          for _ in range(__A  ):
                _lowerCamelCase					: List[Any]		    = current.next
          _lowerCamelCase					: Tuple		    = data



    def 	lowerCamelCase_	(						self   :							Union[str, Any],__A   :							Any  ):
          self.insert_nth(len(self  ),__A  )



    def 	lowerCamelCase_	(						self   :							List[Any],__A   :							Any  ):
          self.insert_nth(0,__A  )



    def 	lowerCamelCase_	(						self   :							Optional[int],__A   :							int,__A   :							Any  ):
          if not 0 <= index <= len(self  ):
                raise IndexError("list index out of range"  )
          _lowerCamelCase					: str		    = Node(__A  )
          if self.head is None:
                _lowerCamelCase					: List[Any]		    = new_node
          elif index == 0:
                _lowerCamelCase					: Any		    = self.head  # link new_node to head
                _lowerCamelCase					: List[Any]		    = new_node
          else:
                _lowerCamelCase					: Tuple		    = self.head
                for _ in range(index - 1  ):
                      _lowerCamelCase					: Any		    = temp.next
                _lowerCamelCase					: int		    = temp.next
                _lowerCamelCase					: Optional[Any]		    = new_node



    def 	lowerCamelCase_	(						self   :							Optional[Any]  ):  # print every node data
          print(self  )



    def 	lowerCamelCase_	(						self   :							List[Any]  ):
          return self.delete_nth(0  )



    def 	lowerCamelCase_	(						self   :							List[Any]  ):  # delete from tail
          return self.delete_nth(len(self  ) - 1  )



    def 	lowerCamelCase_	(						self   :							List[Any],__A   :							int = 0  ):
          if not 0 <= index <= len(self  ) - 1:  # test if index is valid
                raise IndexError("List index out of range."  )
          _lowerCamelCase					: Any		    = self.head  # default first node
          if index == 0:
                _lowerCamelCase					: str		    = self.head.next
          else:
                _lowerCamelCase					: Optional[Any]		    = self.head
                for _ in range(index - 1  ):
                      _lowerCamelCase					: List[Any]		    = temp.next
                _lowerCamelCase					: List[str]		    = temp.next
                _lowerCamelCase					: Optional[int]		    = temp.next.next
          return delete_node.data



    def 	lowerCamelCase_	(						self   :							Dict  ):
          return self.head is None



    def 	lowerCamelCase_	(						self   :							Union[str, Any]  ):
          _lowerCamelCase					: int		    = None
          _lowerCamelCase					: List[Any]		    = self.head

          while current:
                # Store the current node's next node.
                _lowerCamelCase					: Any		    = current.next
                # Make the current node's next point backwards
                _lowerCamelCase					: Any		    = prev
                # Make the previous node be the current node
                _lowerCamelCase					: List[str]		    = current
                # Make the current node the next node (to progress iteration)
                _lowerCamelCase					: Tuple		    = next_node
          # Return prev in order to put the head at the end
          _lowerCamelCase					: Optional[Any]		    = prev







def 		A_							(						):



      """simple docstring"""




      _lowerCamelCase					: List[str]		    = LinkedList()
      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_nth(_lowerCAmelCase					,						i + 1				)
      assert str(_lowerCAmelCase				) == "->".join(str(_lowerCAmelCase				) for i in range(1					,						11				)				)

      linked_list.insert_head(0				)
      linked_list.insert_tail(11				)
      assert str(_lowerCAmelCase				) == "->".join(str(_lowerCAmelCase				) for i in range(0					,						12				)				)

      assert linked_list.delete_head() == 0
      assert linked_list.delete_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				)				)

      assert all(linked_list[i] == i + 1 for i in range(0					,						9				)				) is True

      for i in range(0					,						9				):
            _lowerCamelCase					: Dict		    = -i
      assert all(linked_list[i] == -i for i in range(0					,						9				)				) is True

      linked_list.reverse()
      assert str(_lowerCAmelCase				) == "->".join(str(_lowerCAmelCase				) for i in range(-8					,						1				)				)







def 		A_							(						):



      """simple docstring"""




      _lowerCamelCase					: Any		    = [
          -9,
          100,
          Node(77345112				),
          "dlrow olleH",
          7,
          5555,
          0,
          -1_9_2.5_5_5_5_5,
          "Hello, world!",
          7_7.9,
          Node(10				),
          None,
          None,
          1_2.2_0,
      ]
      _lowerCamelCase					: Any		    = LinkedList()

      for i in test_input:
            linked_list.insert_tail(_lowerCAmelCase				)

      # Check if it's empty or not
      assert linked_list.is_empty() is False
      assert (
          str(_lowerCAmelCase				) == "-9->100->Node(77345112)->dlrow olleH->7->5555->0->"
          "-192.55555->Hello, world!->77.9->Node(10)->None->None->12.2"
      )

      # Delete the head
      _lowerCamelCase					: Tuple		    = linked_list.delete_head()
      assert result == -9
      assert (
          str(_lowerCAmelCase				) == "100->Node(77345112)->dlrow olleH->7->5555->0->-192.55555->"
          "Hello, world!->77.9->Node(10)->None->None->12.2"
      )

      # Delete the tail
      _lowerCamelCase					: Any		    = linked_list.delete_tail()
      assert result == 1_2.2
      assert (
          str(_lowerCAmelCase				) == "100->Node(77345112)->dlrow olleH->7->5555->0->-192.55555->"
          "Hello, world!->77.9->Node(10)->None->None"
      )

      # Delete a node in specific location in linked list
      _lowerCamelCase					: str		    = linked_list.delete_nth(10				)
      assert result is None
      assert (
          str(_lowerCAmelCase				) == "100->Node(77345112)->dlrow olleH->7->5555->0->-192.55555->"
          "Hello, world!->77.9->Node(10)->None"
      )

      # Add a Node instance to its head
      linked_list.insert_head(Node("Hello again, world!"				)				)
      assert (
          str(_lowerCAmelCase				)
          == "Node(Hello again, world!)->100->Node(77345112)->dlrow olleH->"
          "7->5555->0->-192.55555->Hello, world!->77.9->Node(10)->None"
      )

      # Add None to its tail
      linked_list.insert_tail(_lowerCAmelCase				)
      assert (
          str(_lowerCAmelCase				)
          == "Node(Hello again, world!)->100->Node(77345112)->dlrow olleH->"
          "7->5555->0->-192.55555->Hello, world!->77.9->Node(10)->None->None"
      )

      # Reverse the linked list
      linked_list.reverse()
      assert (
          str(_lowerCAmelCase				)
          == "None->None->Node(10)->77.9->Hello, world!->-192.55555->0->5555->"
          "7->dlrow olleH->Node(77345112)->100->Node(Hello again, world!)"
      )







def 		A_							(						):



      """simple docstring"""




      from doctest import testmod

      testmod()

      _lowerCamelCase					: List[str]		    = LinkedList()
      linked_list.insert_head(input("Inserting 1st at head "				).strip()				)
      linked_list.insert_head(input("Inserting 2nd at head "				).strip()				)
      print("\nPrint list:"				)
      linked_list.print_list()
      linked_list.insert_tail(input("\nInserting 1st at tail "				).strip()				)
      linked_list.insert_tail(input("Inserting 2nd at tail "				).strip()				)
      print("\nPrint list:"				)
      linked_list.print_list()
      print("\nDelete head"				)
      linked_list.delete_head()
      print("Delete tail"				)
      linked_list.delete_tail()
      print("\nPrint list:"				)
      linked_list.print_list()
      print("\nReverse linked list"				)
      linked_list.reverse()
      print("\nPrint list:"				)
      linked_list.print_list()
      print("\nString representation of linked list:"				)
      print(_lowerCAmelCase				)
      print("\nReading/changing Node data using indexing:"				)
      print(F'Element at Position 1: {linked_list[1]}'				)
      _lowerCamelCase					: Optional[int]		    = input("Enter New Value: "				).strip()
      print("New list:"				)
      print(_lowerCAmelCase				)
      print(F'length of linked_list is : {len(_lowerCAmelCase				)}'				)


if __name__ == "__main__":
 main()






"""simple docstring"""





from typing import TYPE_CHECKING

from ...utils import OptionalDependencyNotAvailable, _LazyModule, is_torch_available, is_vision_available


_UpperCamelCase					      =   {
    'configuration_pix2struct': [
        'PIX2STRUCT_PRETRAINED_CONFIG_ARCHIVE_MAP',
        'Pix2StructConfig',
        'Pix2StructTextConfig',
        'Pix2StructVisionConfig',
    ],
    'processing_pix2struct': ['Pix2StructProcessor'],
}

try:
							if not is_vision_available():
														raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
							pass
else:
							_UpperCamelCase					      =   ['Pix2StructImageProcessor']


try:
							if not is_torch_available():
														raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
							pass
else:
							_UpperCamelCase					      =   [
							    'PIX2STRUCT_PRETRAINED_MODEL_ARCHIVE_LIST',
							    'Pix2StructPreTrainedModel',
							    'Pix2StructForConditionalGeneration',
							    'Pix2StructVisionModel',
							    'Pix2StructTextModel',
							]

if TYPE_CHECKING:
							from .configuration_pixastruct import (
							    PIX2STRUCT_PRETRAINED_CONFIG_ARCHIVE_MAP,
							    PixaStructConfig,
							    PixaStructTextConfig,
							    PixaStructVisionConfig,
							)
							from .processing_pixastruct import PixaStructProcessor

							try:
														if not is_vision_available():
																					raise OptionalDependencyNotAvailable()
							except OptionalDependencyNotAvailable:
														pass
							else:
														from .image_processing_pixastruct import PixaStructImageProcessor

							try:
														if not is_torch_available():
																					raise OptionalDependencyNotAvailable()
							except OptionalDependencyNotAvailable:
														pass
							else:
														from .modeling_pixastruct import (
														    PIX2STRUCT_PRETRAINED_MODEL_ARCHIVE_LIST,
														    PixaStructForConditionalGeneration,
														    PixaStructPreTrainedModel,
														    PixaStructTextModel,
														    PixaStructVisionModel,
														)

else:
							import sys

							_UpperCamelCase					      =   _LazyModule(__name__, globals()['__file__'], _import_structure, module_spec=__spec__)




