



from typing import Any






class      UpperCamelCase    :



	def __init__(       self			,	UpperCAmelCase__		):
							A__							=       data
							A__							=       None



	def __repr__(       self		):
							return F"""Node({self.data})"""






class      UpperCamelCase    :



	def __init__(       self		):
							A__							=       None



	def __iter__(       self		):
							A__							=       self.head
							while node:
													yield node.data
													A__							=       node.next



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



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



	def __getitem__(       self			,	UpperCAmelCase__		):
							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			,	UpperCAmelCase__			,	UpperCAmelCase__		):
							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 			__A							(       self			,	UpperCAmelCase__		):
							self.insert_nth(len(self		)			,	UpperCAmelCase__		)



	def 			__A							(       self			,	UpperCAmelCase__		):
							self.insert_nth(0			,	UpperCAmelCase__		)



	def 			__A							(       self			,	UpperCAmelCase__			,	UpperCAmelCase__		):
							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 			__A							(       self		):  # print every node data
							print(self		)



	def 			__A							(       self		):
							return self.delete_nth(0		)



	def 			__A							(       self		):  # delete from tail
							return self.delete_nth(len(self		) - 1		)



	def 			__A							(       self			,	UpperCAmelCase__ = 0		):
							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 			__A							(       self		):
							return self.head is None



	def 			__A							(       self		):
							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  UpperCamelCase						(       )->       None:





						"""simple docstring"""





						A__							=       LinkedList()
						assert linked_list.is_empty() is True
						assert str(_A    ) == ""

						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(_A    ) == i
												linked_list.insert_nth(_A			,							i + 1    )
						assert str(_A    ) == "->".join(str(_A    ) for i in range(1			,							11    )    )

						linked_list.insert_head(0    )
						linked_list.insert_tail(11    )
						assert str(_A    ) == "->".join(str(_A    ) 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(_A    ) == 9
						assert str(_A    ) == "->".join(str(_A    ) 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(_A    ) == "->".join(str(_A    ) for i in range(-8			,							1    )    )
def  UpperCamelCase						(       )->       None:





						"""simple docstring"""





						A__							=       [
						    -9,
						    100,
						    Node(77345112    ),
						    "dlrow olleH",
						    7,
						    5555,
						    0,
						    -192.5_5555,
						    "Hello, world!",
						    77.9,
						    Node(10    ),
						    None,
						    None,
						    12.20,
						]
						A__							=       LinkedList()

						for i in test_input:
												linked_list.insert_tail(_A    )

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





						"""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(_A    )
						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(_A    )
						print(f"""length of linked_list is : {len(_A    )}"""    )


if __name__ == "__main__":
						main()










import math
def  UpperCamelCase						(       _A			:				float			,							_A			:				float    )->       float:





						"""simple docstring"""





						if (
						    not isinstance(_A			,							(int, float)    )
						    or power_factor < -1
						    or power_factor > 1
						):
												raise ValueError("power_factor must be a valid float value between -1 and 1."    )
						return apparent_power * power_factor
def  UpperCamelCase						(       _A			:				float			,							_A			:				float    )->       float:





						"""simple docstring"""





						if (
						    not isinstance(_A			,							(int, float)    )
						    or power_factor < -1
						    or power_factor > 1
						):
												raise ValueError("power_factor must be a valid float value between -1 and 1."    )
						return apparent_power * math.sqrt(1 - power_factor**2    )


if __name__ == "__main__":
						import doctest

						doctest.testmod()





