
from __future__ import annotations

from collections.abc import Iterator
from typing import Any






class   UpperCAmelCase		:



   def __init__(self		:					List[Any]    ,						snake_case__		:					Any )		->	int:


          '''simple docstring'''


          snake_case       :   Any							=      data
          snake_case       :   Node | None							=      None






class   UpperCAmelCase		:



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


          '''simple docstring'''


          snake_case       :   Optional[int]							=      None
          snake_case       :   int							=      None



   def __iter__(self		:					Union[str, Any] )		->	Iterator[Any]:


          '''simple docstring'''


          snake_case       :   Union[str, Any]							=      self.head
          while self.head:
                 yield node.data
                 snake_case       :   Any							=      node.next
                 if node == self.head:
                        break



   def __len__(self		:					List[Any] )		->	int:


          '''simple docstring'''


          return sum(1 for _ in self )



   def __repr__(self		:					int )		->	Optional[int]:


          '''simple docstring'''


          return "->".join(str(snake_case__ ) for item in iter(self ) )



   def 				_SCREAMING_SNAKE_CASE   (self		:					int    ,						snake_case__		:					Any )		->	None:


          '''simple docstring'''


          self.insert_nth(len(self )    ,						snake_case__ )



   def 				_SCREAMING_SNAKE_CASE   (self		:					Union[str, Any]    ,						snake_case__		:					Any )		->	None:


          '''simple docstring'''


          self.insert_nth(0    ,						snake_case__ )



   def 				_SCREAMING_SNAKE_CASE   (self		:					List[Any]    ,						snake_case__		:					int    ,						snake_case__		:					Any )		->	None:


          '''simple docstring'''


          if index < 0 or index > len(self ):
                 raise IndexError("list index out of range." )
          snake_case       :   Optional[Any]							=      Node(snake_case__ )
          if self.head is None:
                 snake_case       :   Any							=      new_node  # first node points itself
                 snake_case       :   Optional[int]							=      new_node
          elif index == 0:  # insert at head
                 snake_case       :   int							=      self.head
                 snake_case       :   Union[str, Any]							=      new_node
          else:
                 snake_case       :   Optional[Any]							=      self.head
                 for _ in range(index - 1 ):
                        snake_case       :   Tuple							=      temp.next
                 snake_case       :   Optional[int]							=      temp.next
                 snake_case       :   Tuple							=      new_node
                 if index == len(self ) - 1:  # insert at tail
                        snake_case       :   Tuple							=      new_node



   def 				_SCREAMING_SNAKE_CASE   (self		:					str )		->	Dict:


          '''simple docstring'''


          return self.delete_nth(0 )



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


          '''simple docstring'''


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



   def 				_SCREAMING_SNAKE_CASE   (self		:					Dict    ,						snake_case__		:					int = 0 )		->	Any:


          '''simple docstring'''


          if not 0 <= index < len(self ):
                 raise IndexError("list index out of range." )
          snake_case       :   str							=      self.head
          if self.head == self.tail:  # just one node
                 snake_case       :   Dict							=      None
          elif index == 0:  # delete head node
                 snake_case       :   List[Any]							=      self.tail.next.next
                 snake_case       :   Any							=      self.head.next
          else:
                 snake_case       :   Tuple							=      self.head
                 for _ in range(index - 1 ):
                        snake_case       :   Dict							=      temp.next
                 snake_case       :   Dict							=      temp.next
                 snake_case       :   int							=      temp.next.next
                 if index == len(self ) - 1:  # delete at tail
                        snake_case       :   Any							=      temp
          return delete_node.data



   def 				_SCREAMING_SNAKE_CASE   (self		:					int )		->	bool:


          '''simple docstring'''


          return len(self ) == 0



def 			UpperCamelCase					(    ):
       snake_case       :   str							=      CircularLinkedList()
       assert len(_lowerCamelCase    ) == 0
       assert circular_linked_list.is_empty() is True
       assert str(_lowerCamelCase    ) == ""

       try:
              circular_linked_list.delete_front()
              raise AssertionError  # This should not happen
       except IndexError:
              assert True  # This should happen

       try:
              circular_linked_list.delete_tail()
              raise AssertionError  # This should not happen
       except IndexError:
              assert True  # This should happen

       try:
              circular_linked_list.delete_nth(-1    )
              raise AssertionError
       except IndexError:
              assert True

       try:
              circular_linked_list.delete_nth(0    )
              raise AssertionError
       except IndexError:
              assert True

       assert circular_linked_list.is_empty() is True
       for i in range(5    ):
              assert len(_lowerCamelCase    ) == i
              circular_linked_list.insert_nth(_lowerCamelCase				,					i + 1    )
       assert str(_lowerCamelCase    ) == "->".join(str(_lowerCamelCase    ) for i in range(1				,					6    )    )

       circular_linked_list.insert_tail(6    )
       assert str(_lowerCamelCase    ) == "->".join(str(_lowerCamelCase    ) for i in range(1				,					7    )    )
       circular_linked_list.insert_head(0    )
       assert str(_lowerCamelCase    ) == "->".join(str(_lowerCamelCase    ) for i in range(0				,					7    )    )

       assert circular_linked_list.delete_front() == 0
       assert circular_linked_list.delete_tail() == 6
       assert str(_lowerCamelCase    ) == "->".join(str(_lowerCamelCase    ) for i in range(1				,					6    )    )
       assert circular_linked_list.delete_nth(2    ) == 3

       circular_linked_list.insert_nth(2				,					3    )
       assert str(_lowerCamelCase    ) == "->".join(str(_lowerCamelCase    ) for i in range(1				,					6    )    )

       assert circular_linked_list.is_empty() is False


if __name__ == "__main__":
   import doctest

   doctest.testmod()







class  lowerCamelCase__							:




	'''simple docstring'''




	def __init__(					self		:Union[str, Any]						)		-> None:
								__UpperCamelCase	:   dict[str, TrieNode]			   =					{}  # Mapping from char to TrieNode
								__UpperCamelCase	:   List[str]			   =					False







	def    _lowerCamelCase				(					self		:Any     ,   a		:list[str]						)		-> None:
								for word in words:
															self.insert(a						)







	def    _lowerCamelCase				(					self		:List[str]     ,   a		:str						)		-> None:
								__UpperCamelCase	:   Dict			   =					self
								for char in word:
															if char not in curr.nodes:
																						__UpperCamelCase	:   List[Any]			   =					TrieNode()
															__UpperCamelCase	:   List[Any]			   =					curr.nodes[char]
								__UpperCamelCase	:   Union[str, Any]			   =					True







	def    _lowerCamelCase				(					self		:Optional[int]     ,   a		:str						)		-> bool:
								__UpperCamelCase	:   Union[str, Any]			   =					self
								for char in word:
															if char not in curr.nodes:
																						return False
															__UpperCamelCase	:   Union[str, Any]			   =					curr.nodes[char]
								return curr.is_leaf







	def    _lowerCamelCase				(					self		:Any     ,   a		:str						)		-> None:

								def _delete(a		:TrieNode     ,   a		:str     ,   a		:int						) -> bool:
															if index == len(a						):
																						# If word does not exist
																						if not curr.is_leaf:
																													return False
																						__UpperCamelCase	:   str			   =					False
																						return len(curr.nodes						) == 0
															__UpperCamelCase	:   List[Any]			   =					word[index]
															__UpperCamelCase	:   Optional[int]			   =					curr.nodes.get(a						)
															# If char not in current trie node
															if not char_node:
																						return False
															# Flag to check if node can be deleted
															__UpperCamelCase	:   int			   =					_delete(a     ,   a     ,   index + 1						)
															if delete_curr:
																						del curr.nodes[char]
																						return len(curr.nodes						) == 0
															return delete_curr

								_delete(self     ,   a     ,   0						)




def 	_SCREAMING_SNAKE_CASE					(		_lowerCamelCase :			TrieNode						,  _lowerCamelCase :			str)					->    None:






							'''simple docstring'''





							if node.is_leaf:
														print(_lowerCamelCase						,  end=" ")

							for key, value in node.nodes.items():
														print_words(_lowerCamelCase						,  word + key)




def 	_SCREAMING_SNAKE_CASE					(		)					->    bool:






							'''simple docstring'''





							__UpperCamelCase	:   int			   =					"banana bananas bandana band apple all beast".split()
							__UpperCamelCase	:   Union[str, Any]			   =					TrieNode()
							root.insert_many(_lowerCamelCase)
							# print_words(root, "")
							assert all(root.find(_lowerCamelCase) for word in words)
							assert root.find("banana")
							assert not root.find("bandanas")
							assert not root.find("apps")
							assert root.find("apple")
							assert root.find("all")
							root.delete("all")
							assert not root.find("all")
							root.delete("banana")
							assert not root.find("banana")
							assert root.find("bananas")
							return True




def 	_SCREAMING_SNAKE_CASE					(		_lowerCamelCase :			str						,  _lowerCamelCase :			bool)					->    None:






							'''simple docstring'''





							print(str(_lowerCamelCase)						,  "works!" if passes else "doesn't work :(")




def 	_SCREAMING_SNAKE_CASE					(		)					->    None:






							'''simple docstring'''





							assert test_trie()




def 	_SCREAMING_SNAKE_CASE					(		)					->    None:






							'''simple docstring'''





							print_results("Testing trie functionality"						,  test_trie())


if __name__ == "__main__":
		main()