





from typing import Any





class A_					:




   def __init__(self	:Tuple    ,   _UpperCamelCase	:Any )->					Dict:
         __A          =				data
         __A          =				None






   def __repr__(self	:List[Any] )->					str:
         return f"""Node({self.data})"""





class A_					:




   def __init__(self	:List[str] )->					Dict:
         __A          =				None




   def __iter__(self	:List[str] )->					Any:
         __A          =				self.head
         while node:
               yield node.data
               __A          =				node.next




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




   def __repr__(self	:Tuple )->					str:
         return "->".join([str(_UpperCamelCase ) for item in self] )




   def __getitem__(self	:Optional[Any]    ,   _UpperCamelCase	:int )->					Any:
         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	:Optional[int]    ,   _UpperCamelCase	:int    ,   _UpperCamelCase	:Any )->					None:
         if not 0 <= index < len(self ):
               raise ValueError('''list index out of range.''' )
         __A          =				self.head
         for _ in range(_UpperCamelCase ):
               __A          =				current.next
         __A          =				data




   def _lowerCAmelCase      (self	:str    ,   _UpperCamelCase	:Any )->					None:
         self.insert_nth(len(self )    ,   _UpperCamelCase )




   def _lowerCAmelCase      (self	:List[str]    ,   _UpperCamelCase	:Any )->					None:
         self.insert_nth(0    ,   _UpperCamelCase )




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




   def _lowerCAmelCase      (self	:Union[str, Any] )->					None:  # print every node data
         print(self )




   def _lowerCAmelCase      (self	:Any )->					Any:
         return self.delete_nth(0 )




   def _lowerCAmelCase      (self	:Optional[int] )->					Any:  # delete from tail
         return self.delete_nth(len(self ) - 1 )




   def _lowerCAmelCase      (self	:Dict    ,   _UpperCamelCase	:int = 0 )->					Any:
         if not 0 <= index <= len(self ) - 1:  # test if index is valid
               raise IndexError('''List index out of range.''' )
         __A          =				self.head  # default first node
         if index == 0:
               __A          =				self.head.next
         else:
               __A          =				self.head
               for _ in range(index - 1 ):
                     __A          =				temp.next
               __A          =				temp.next
               __A          =				temp.next.next
         return delete_node.data




   def _lowerCAmelCase      (self	:Optional[Any] )->					bool:
         return self.head is None






   def _lowerCAmelCase      (self	:Optional[int] )->					None:
         __A          =				None
         __A          =				self.head

         while current:
               # Store the current node's next node.
               __A          =				current.next
               # Make the current node's next point backwards
               __A          =				prev
               # Make the previous node be the current node
               __A          =				current
               # Make the current node the next node (to progress iteration)
               __A          =				next_node
         # Return prev in order to put the head at the end
         __A          =				prev





def _a				(	)	->						None:







      '''simple docstring'''






      __A          =				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 ):
            __A          =				-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				(	)	->						None:







      '''simple docstring'''






      __A          =				[
          -9,
          1_00,
          Node(77_34_51_12 ),
          '''dlrow olleH''',
          7,
          55_55,
          0,
          -192.55_555,
          '''Hello, world!''',
          77.9,
          Node(10 ),
          None,
          None,
          12.20,
      ]
      __A          =				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
      __A          =				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
      __A          =				linked_list.delete_tail()
      assert result == 12.2
      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
      __A          =				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				(	)	->						Any:







      '''simple docstring'''






      from doctest import testmod

      testmod()

      __A          =				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]}""" )
      __A          =				input('''Enter New Value: ''' ).strip()
      print('''New list:''' )
      print(lowerCamelCase )
      print(F"""length of linked_list is : {len(lowerCamelCase )}""" )


if __name__ == "__main__":
       main()












# Copyright 2023 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from typing import TYPE_CHECKING

# rely on isort to merge the imports
from ...utils import OptionalDependencyNotAvailable, _LazyModule, is_torch_available, is_vision_available


snake_case__					:							List[str]													=     {
    'configuration_vivit': ['VIVIT_PRETRAINED_CONFIG_ARCHIVE_MAP', 'VivitConfig'],
}
try:
       if not is_vision_available():
              raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
       pass
else:
       snake_case__					:							Tuple													=     ['VivitImageProcessor']


try:
       if not is_torch_available():
              raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
       pass
else:
       snake_case__					:							Any													=     [
           'VIVIT_PRETRAINED_MODEL_ARCHIVE_LIST',
           'VivitModel',
           'VivitPreTrainedModel',
           'VivitForVideoClassification',
       ]


if TYPE_CHECKING:
       from .configuration_vivit import VIVIT_PRETRAINED_CONFIG_ARCHIVE_MAP, VivitConfig

       try:
              if not is_vision_available():
                     raise OptionalDependencyNotAvailable()
       except OptionalDependencyNotAvailable:
              pass
       else:
              from .image_processing_vivit import VivitImageProcessor

       try:
              if not is_torch_available():
                     raise OptionalDependencyNotAvailable()
       except OptionalDependencyNotAvailable:
              pass
       else:
              from .modeling_vivit import (
                  VIVIT_PRETRAINED_MODEL_ARCHIVE_LIST,
                  VivitForVideoClassification,
                  VivitModel,
                  VivitPreTrainedModel,
              )


else:
       import sys

       snake_case__					:							List[str]													=     _LazyModule(__name__, globals()['__file__'], _import_structure, module_spec=__spec__)





