
'''simple docstring'''



class   UpperCAmelCase_					:






						'''simple docstring'''






						def __init__( self   ,       _lowercase				):

												"""simple docstring"""



												_lowerCAmelCase  						=			n
												_lowerCAmelCase  						=			[None] * self.n
												_lowerCAmelCase  						=			0  # index of the first element
												_lowerCAmelCase  						=			0
												_lowerCAmelCase  						=			0




						def __len__( self				):

												"""simple docstring"""



												return self.size




						def  _lowercase     ( self				):

												"""simple docstring"""



												return self.size == 0




						def  _lowercase     ( self				):

												"""simple docstring"""



												return False if self.is_empty() else self.array[self.front]




						def  _lowercase     ( self   ,       _lowercase				):

												"""simple docstring"""



												if self.size >= self.n:
																		raise Exception("""QUEUE IS FULL"""				)

												_lowerCAmelCase  						=			data
												_lowerCAmelCase  						=			(self.rear + 1) % self.n
												self.size += 1
												return self




						def  _lowercase     ( self				):

												"""simple docstring"""



												if self.size == 0:
																		raise Exception("""UNDERFLOW"""				)

												_lowerCAmelCase  						=			self.array[self.front]
												_lowerCAmelCase  						=			None
												_lowerCAmelCase  						=			(self.front + 1) % self.n
												self.size -= 1
												return temp


'''simple docstring'''



from __future__ import annotations

from typing import Any




class   UpperCAmelCase_					(		_SCREAMING_SNAKE_CASE			):






						'''simple docstring'''






						pass






class   UpperCAmelCase_					:






						'''simple docstring'''






						def __init__( self   ,       _lowercase				):

												"""simple docstring"""



												_lowerCAmelCase  						=			data
												_lowerCAmelCase  						=			None




						def __iter__( self				):

												"""simple docstring"""



												_lowerCAmelCase  						=			self
												_lowerCAmelCase  						=			[]
												while node:
																		if node in visited:
																								raise ContainsLoopError
																		visited.append(_lowercase				)
																		yield node.data
																		_lowerCAmelCase  						=			node.next_node




						@property
						def  _lowercase     ( self				):

												"""simple docstring"""



												try:
																		list(self				)
																		return False
												except ContainsLoopError:
																		return True


if __name__ == "__main__":
						_lowercase    =		Node(1)
						_lowercase    =		Node(2)
						_lowercase    =		Node(3)
						_lowercase    =		Node(4)
						print(root_node.has_loop)  # False
						_lowercase    =		root_node.next_node
						print(root_node.has_loop)  # True

						_lowercase    =		Node(5)
						_lowercase    =		Node(6)
						_lowercase    =		Node(5)
						_lowercase    =		Node(6)
						print(root_node.has_loop)  # False

						_lowercase    =		Node(1)
						print(root_node.has_loop)  # False
