






from __future__ import annotations

import queue






class 						lowercase_   :






      '''simple docstring'''




      def __init__( self :		int					,   __UpperCAmelCase :		List[str]    )       ->str:




       """simple docstring"""


       a						    = data
       a						    = None
       a						    = None
def 		_a       ( )				->     TreeNode:
 print('''\n********Press N to stop entering at any point of time********\n'''					)
 a						    = input('''Enter the value of the root node: '''					).strip().lower()
 a						    = queue.Queue()
 a						    = TreeNode(int(a					)					)
 q.put(a					)
 while not q.empty():
  a						    = q.get()
  a						    = F"""Enter the left node of {node_found.data}: """
  a						    = input(a					).strip().lower() or '''n'''
  if check == "n":
   return tree_node
  a						    = TreeNode(int(a					)					)
  a						    = left_node
  q.put(a					)
  a						    = F"""Enter the right node of {node_found.data}: """
  a						    = input(a					).strip().lower() or '''n'''
  if check == "n":
   return tree_node
  a						    = TreeNode(int(a					)					)
  a						    = right_node
  q.put(a					)
 raise
def 		_a       ( a					:Dict					)				->     None:
 if not isinstance(a      ,				a					) or not node:
  return
 print(node.data      ,				end=''','''					)
 pre_order(node.left					)
 pre_order(node.right					)
def 		_a       ( a					:int					)				->     None:
 if not isinstance(a      ,				a					) or not node:
  return
 in_order(node.left					)
 print(node.data      ,				end=''','''					)
 in_order(node.right					)
def 		_a       ( a					:int					)				->     None:
 if not isinstance(a      ,				a					) or not node:
  return
 post_order(node.left					)
 post_order(node.right					)
 print(node.data      ,				end=''','''					)
def 		_a       ( a					:Optional[int]					)				->     None:
 if not isinstance(a      ,				a					) or not node:
  return
 a						    = queue.Queue()
 q.put(a					)
 while not q.empty():
  a						    = q.get()
  print(node_dequeued.data      ,				end=''','''					)
  if node_dequeued.left:
   q.put(node_dequeued.left					)
  if node_dequeued.right:
   q.put(node_dequeued.right					)
def 		_a       ( a					:Optional[Any]					)				->     None:
 if not isinstance(a      ,				a					) or not node:
  return
 a						    = queue.Queue()
 q.put(a					)
 while not q.empty():
  a						    = []
  while not q.empty():
   a						    = q.get()
   print(node_dequeued.data      ,				end=''','''					)
   if node_dequeued.left:
    list_.append(node_dequeued.left					)
   if node_dequeued.right:
    list_.append(node_dequeued.right					)
  print()
  for node in list_:
   q.put(a					)
def 		_a       ( a					:Union[str, Any]					)				->     None:
 if not isinstance(a      ,				a					) or not node:
  return
 a						    = []
 a						    = node
 while n or stack:
  while n:  # start from root node, find its left child
   print(n.data      ,				end=''','''					)
   stack.append(a					)
   a						    = n.left
  # end of while means current node doesn't have left child
  a						    = stack.pop()
  # start to traverse its right child
  a						    = n.right
def 		_a       ( a					:str					)				->     None:
 if not isinstance(a      ,				a					) or not node:
  return
 a						    = []
 a						    = node
 while n or stack:
  while n:
   stack.append(a					)
   a						    = n.left
  a						    = stack.pop()
  print(n.data      ,				end=''','''					)
  a						    = n.right
def 		_a       ( a					:Optional[int]					)				->     None:
 if not isinstance(a      ,				a					) or not node:
  return
 a    ,	a						    = [], []
 a						    = node
 stacka.append(a					)
 while stacka:  # to find the reversed order of post order, store it in stack2
  a						    = stacka.pop()
  if n.left:
   stacka.append(n.left					)
  if n.right:
   stacka.append(n.right					)
  stacka.append(a					)
 while stacka:  # pop up from stack2 will be the post order
  print(stacka.pop().data      ,				end=''','''					)
def 		_a       ( a					:List[Any] = ""      ,				a					:Optional[int]=50      ,				a					:Any="*"					)				->     str:
 if not s:
  return "\n" + width * char
 a    ,	a						    = divmod(width - len(a					) - 2      ,				2					)
 return F"""{left * char} {s} {(left + extra) * char}"""


if __name__ == "__main__":
     import doctest

     doctest.testmod()
     print(prompt("Binary Tree Traversals"))

     UpperCAmelCase__							  =						build_tree()
     print(prompt("Pre Order Traversal"))
     pre_order(node)
     print(prompt() + "\n")

     print(prompt("In Order Traversal"))
     in_order(node)
     print(prompt() + "\n")

     print(prompt("Post Order Traversal"))
     post_order(node)
     print(prompt() + "\n")

     print(prompt("Level Order Traversal"))
     level_order(node)
     print(prompt() + "\n")

     print(prompt("Actual Level Order Traversal"))
     level_order_actual(node)
     print("*" * 50 + "\n")

     print(prompt("Pre Order Traversal - Iteration Version"))
     pre_order_iter(node)
     print(prompt() + "\n")

     print(prompt("In Order Traversal - Iteration Version"))
     in_order_iter(node)
     print(prompt() + "\n")

     print(prompt("Post Order Traversal - Iteration Version"))
     post_order_iter(node)
     print(prompt())









class 		snake_case_   :







	'''simple docstring'''




	def __init__(						self							:     Dict					,      __lowerCamelCase							:     int					,      __lowerCamelCase							:     Optional[Any]=None					,      __lowerCamelCase							:     Optional[Any]=None   )       -> Dict:

			'''simple docstring'''




			__lowercase											=     data
			__lowercase											=     previous
			__lowercase											=     next_node




	def __str__(						self							:     int   )       -> str:

			'''simple docstring'''




			return F"{self.data}"




	def    UpperCAmelCase			(						self							:     int   )       -> int:

			'''simple docstring'''




			return self.data




	def    UpperCAmelCase			(						self							:     Tuple   )       -> Optional[int]:

			'''simple docstring'''




			return self.next






	def    UpperCAmelCase			(						self							:     Optional[int]   )       -> Any:

			'''simple docstring'''




			return self.previous





class 		snake_case_   :







	'''simple docstring'''




	def __init__(						self							:     Tuple					,      __lowerCamelCase							:     Optional[Any]   )       -> str:

			'''simple docstring'''




			__lowercase											=     head




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

			'''simple docstring'''




			return self






	def    UpperCAmelCase			(						self							:     str   )       -> str:

			'''simple docstring'''




			if not self.current:
					raise StopIteration
			else:
					__lowercase											=     self.current.get_data()
					__lowercase											=     self.current.get_next()
					return value





class 		snake_case_   :







	'''simple docstring'''




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

			'''simple docstring'''




			__lowercase											=     None  # First node in list
			__lowercase											=     None  # Last node in list




	def __str__(						self							:     int   )       -> Any:

			'''simple docstring'''




			__lowercase											=     self.head
			__lowercase											=     []
			while current is not None:
					nodes.append(current.get_data()   )
					__lowercase											=     current.get_next()
			return " ".join(str(__lowerCamelCase   ) for node in nodes   )




	def __contains__(						self							:     Tuple					,      __lowerCamelCase							:     int   )       -> List[Any]:

			'''simple docstring'''




			__lowercase											=     self.head
			while current:
					if current.get_data() == value:
							return True
					__lowercase											=     current.get_next()
			return False




	def __iter__(						self							:     Optional[int]   )       -> List[str]:

			'''simple docstring'''




			return LinkedListIterator(self.head   )




	def    UpperCAmelCase			(						self							:     Any   )       -> str:

			'''simple docstring'''




			if self.head:
					return self.head.get_data()
			return None




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

			'''simple docstring'''




			if self.tail:
					return self.tail.get_data()
			return None




	def    UpperCAmelCase			(						self							:     str					,      __lowerCamelCase							:     Node   )       -> None:

			'''simple docstring'''




			if self.head is None:
					__lowercase											=     node
					__lowercase											=     node
			else:
					self.insert_before_node(self.head					,      __lowerCamelCase   )




	def    UpperCAmelCase			(						self							:     Dict					,      __lowerCamelCase							:     Node   )       -> None:

			'''simple docstring'''




			if self.head is None:
					self.set_head(__lowerCamelCase   )
			else:
					self.insert_after_node(self.tail					,      __lowerCamelCase   )




	def    UpperCAmelCase			(						self							:     Optional[Any]					,      __lowerCamelCase							:     int   )       -> None:

			'''simple docstring'''




			__lowercase											=     Node(__lowerCamelCase   )
			if self.head is None:
					self.set_head(__lowerCamelCase   )
			else:
					self.set_tail(__lowerCamelCase   )




	def    UpperCAmelCase			(						self							:     int					,      __lowerCamelCase							:     Node					,      __lowerCamelCase							:     Node   )       -> None:

			'''simple docstring'''




			__lowercase											=     node
			__lowercase											=     node.previous

			if node.get_previous() is None:
					__lowercase											=     node_to_insert
			else:
					__lowercase											=     node_to_insert

			__lowercase											=     node_to_insert




	def    UpperCAmelCase			(						self							:     Optional[Any]					,      __lowerCamelCase							:     Node					,      __lowerCamelCase							:     Node   )       -> None:

			'''simple docstring'''




			__lowercase											=     node
			__lowercase											=     node.next

			if node.get_next() is None:
					__lowercase											=     node_to_insert
			else:
					__lowercase											=     node_to_insert

			__lowercase											=     node_to_insert




	def    UpperCAmelCase			(						self							:     List[str]					,      __lowerCamelCase							:     int					,      __lowerCamelCase							:     int   )       -> None:

			'''simple docstring'''




			__lowercase											=     1
			__lowercase											=     Node(__lowerCamelCase   )
			__lowercase											=     self.head
			while node:
					if current_position == position:
							self.insert_before_node(__lowerCamelCase					,      __lowerCamelCase   )
							return
					current_position += 1
					__lowercase											=     node.next
			self.insert_after_node(self.tail					,      __lowerCamelCase   )




	def    UpperCAmelCase			(						self							:     Optional[Any]					,      __lowerCamelCase							:     int   )       -> Node:

			'''simple docstring'''




			__lowercase											=     self.head
			while node:
					if node.get_data() == item:
							return node
					__lowercase											=     node.get_next()
			raise Exception('Node not found'   )




	def    UpperCAmelCase			(						self							:     Optional[Any]					,      __lowerCamelCase							:     List[str]   )       -> Dict:

			'''simple docstring'''




			if (node := self.get_node(__lowerCamelCase   )) is not None:
					if node == self.head:
							__lowercase											=     self.head.get_next()

					if node == self.tail:
							__lowercase											=     self.tail.get_previous()

					self.remove_node_pointers(__lowerCamelCase   )




	@staticmethod
	def    UpperCAmelCase			(						__lowerCamelCase							:     Node   )       -> None:

			'''simple docstring'''




			if node.get_next():
					__lowercase											=     node.previous

			if node.get_previous():
					__lowercase											=     node.next

			__lowercase											=     None
			__lowercase											=     None






	def    UpperCAmelCase			(						self							:     str   )       -> List[str]:

			'''simple docstring'''




			return self.head is None





def  SCREAMING_SNAKE_CASE				(      )		->    None:
		pass


if __name__ == "__main__":
		import doctest

		doctest.testmod()




