

'''simple docstring'''





from __future__ import annotations

from random import random
from typing import Generic, TypeVar

A_	= TypeVar("KT")
A_	= TypeVar("VT")


class  UpperCAmelCase (							Generic[KT, VT]    ):

		'''simple docstring'''






		def __init__(					self   ,			SCREAMING_SNAKE_CASE_ = "root"   ,			SCREAMING_SNAKE_CASE_ = None		)  ->     List[str]:






							'''simple docstring'''



							lowerCamelCase_  				=      key
							lowerCamelCase_  				=      value
							lowerCamelCase_  				=      []
		def __repr__(					self		)  ->     str:






							'''simple docstring'''



							return f'''Node({self.key}: {self.value})'''






		@property
		def 			UpperCamelCase(					self		)  ->     int:






							'''simple docstring'''



							return len(self.forward		)


class  UpperCAmelCase (							Generic[KT, VT]    ):

		'''simple docstring'''






		def __init__(					self   ,			SCREAMING_SNAKE_CASE_ = 0.5   ,			SCREAMING_SNAKE_CASE_ = 16		)  ->     Union[str, Any]:






							'''simple docstring'''



							lowerCamelCase_  				=      Node[KT, VT]()
							lowerCamelCase_  				=      0
							lowerCamelCase_  				=      p
							lowerCamelCase_  				=      max_level
		def __str__(					self		)  ->     str:






							'''simple docstring'''



							lowerCamelCase_  				=      list(self		)

							if len(SCREAMING_SNAKE_CASE_		) == 0:
												return f'''SkipList(level={self.level})'''

							lowerCamelCase_  				=      max((len(str(SCREAMING_SNAKE_CASE_		)		) for item in items)   ,			default=4		)
							lowerCamelCase_  				=      max(SCREAMING_SNAKE_CASE_   ,			4		) + 4

							lowerCamelCase_  				=      self.head
							lowerCamelCase_  				=      []

							lowerCamelCase_  				=      node.forward.copy()
							lines.append(f'''[{node.key}]'''.ljust(SCREAMING_SNAKE_CASE_   ,			'-'		) + '* ' * len(SCREAMING_SNAKE_CASE_		)		)
							lines.append(' ' * label_size + '| ' * len(SCREAMING_SNAKE_CASE_		)		)

							while len(node.forward		) != 0:
												lowerCamelCase_  				=      node.forward[0]

												lines.append(
												    f'''[{node.key}]'''.ljust(SCREAMING_SNAKE_CASE_   ,			'-'		)
												    + ' '.join(str(n.key		) if n.key == node.key else '|' for n in forwards		)		)
												lines.append(' ' * label_size + '| ' * len(SCREAMING_SNAKE_CASE_		)		)
												lowerCamelCase_  				=      node.forward

							lines.append('None'.ljust(SCREAMING_SNAKE_CASE_		) + '* ' * len(SCREAMING_SNAKE_CASE_		)		)
							return f'''SkipList(level={self.level})\n''' + "\n".join(SCREAMING_SNAKE_CASE_		)
		def __iter__(					self		)  ->     int:






							'''simple docstring'''



							lowerCamelCase_  				=      self.head

							while len(node.forward		) != 0:
												yield node.forward[0].key
												lowerCamelCase_  				=      node.forward[0]
		def 			UpperCamelCase(					self		)  ->     int:






							'''simple docstring'''



							lowerCamelCase_  				=      1
							while random() < self.p and level < self.max_level:
												level += 1

							return level
		def 			UpperCamelCase(					self   ,			SCREAMING_SNAKE_CASE_		)  ->     tuple[Node[KT, VT] | None, list[Node[KT, VT]]]:






							'''simple docstring'''



							lowerCamelCase_  				=      []

							lowerCamelCase_  				=      self.head

							for i in reversed(range(self.level		)		):
												# i < node.level - When node level is lesser than `i` decrement `i`.
												# node.forward[i].key < key - Jumping to node with key value higher
												#                             or equal to searched key would result
												#                             in skipping searched key.
												while i < node.level and node.forward[i].key < key:
																	lowerCamelCase_  				=      node.forward[i]
												# Each leftmost node (relative to searched node) will potentially have to
												# be updated.
												update_vector.append(SCREAMING_SNAKE_CASE_		)

							update_vector.reverse()  # Note that we were inserting values in reverse order.

							# len(node.forward) != 0 - If current node doesn't contain any further
							#                          references then searched key is not present.
							# node.forward[0].key == key - Next node key should be equal to search key
							#                              if key is present.
							if len(node.forward		) != 0 and node.forward[0].key == key:
												return node.forward[0], update_vector
							else:
												return None, update_vector
		def 			UpperCamelCase(					self   ,			SCREAMING_SNAKE_CASE_		)  ->     Tuple:






							'''simple docstring'''



							lowerCamelCase_				,lowerCamelCase_  				=      self._locate_node(SCREAMING_SNAKE_CASE_		)

							if node is not None:
												for i, update_node in enumerate(SCREAMING_SNAKE_CASE_		):
																	# Remove or replace all references to removed node.
																	if update_node.level > i and update_node.forward[i].key == key:
																						if node.level > i:
																											lowerCamelCase_  				=      node.forward[i]
																						else:
																											lowerCamelCase_  				=      update_node.forward[:i]
		def 			UpperCamelCase(					self   ,			SCREAMING_SNAKE_CASE_   ,			SCREAMING_SNAKE_CASE_		)  ->     str:






							'''simple docstring'''



							lowerCamelCase_				,lowerCamelCase_  				=      self._locate_node(SCREAMING_SNAKE_CASE_		)
							if node is not None:
												lowerCamelCase_  				=      value
							else:
												lowerCamelCase_  				=      self.random_level()

												if level > self.level:
																	# After level increase we have to add additional nodes to head.
																	for _ in range(self.level - 1   ,			SCREAMING_SNAKE_CASE_		):
																						update_vector.append(self.head		)
																	lowerCamelCase_  				=      level

												lowerCamelCase_  				=      Node(SCREAMING_SNAKE_CASE_   ,			SCREAMING_SNAKE_CASE_		)

												for i, update_node in enumerate(update_vector[:level]		):
																	# Change references to pass through new node.
																	if update_node.level > i:
																						new_node.forward.append(update_node.forward[i]		)

																	if update_node.level < i + 1:
																						update_node.forward.append(SCREAMING_SNAKE_CASE_		)
																	else:
																						lowerCamelCase_  				=      new_node






		def 			UpperCamelCase(					self   ,			SCREAMING_SNAKE_CASE_		)  ->     VT | None:






							'''simple docstring'''



							lowerCamelCase_				,lowerCamelCase_  				=      self._locate_node(SCREAMING_SNAKE_CASE_		)

							if node is not None:
												return node.value

							return None







def   _UpperCamelCase	(		)       ->			Any:
					lowerCamelCase_  				=      SkipList()
					skip_list.insert('Key1'    ,3	)
					skip_list.insert('Key2'    ,12	)
					skip_list.insert('Key3'    ,41	)
					skip_list.insert('Key4'    ,-19	)

					lowerCamelCase_  				=      skip_list.head
					lowerCamelCase_  				=      {}
					while node.level != 0:
										lowerCamelCase_  				=      node.forward[0]
										lowerCamelCase_  				=      node.value

					assert len(__UpperCamelCase	) == 4
					assert all_values["Key1"] == 3
					assert all_values["Key2"] == 12
					assert all_values["Key3"] == 41
					assert all_values["Key4"] == -19







def   _UpperCamelCase	(		)       ->			Optional[Any]:
					lowerCamelCase_  				=      SkipList()
					skip_list.insert('Key1'    ,10	)
					skip_list.insert('Key1'    ,12	)

					skip_list.insert('Key5'    ,7	)
					skip_list.insert('Key7'    ,10	)
					skip_list.insert('Key10'    ,5	)

					skip_list.insert('Key7'    ,7	)
					skip_list.insert('Key5'    ,5	)
					skip_list.insert('Key10'    ,10	)

					lowerCamelCase_  				=      skip_list.head
					lowerCamelCase_  				=      {}
					while node.level != 0:
										lowerCamelCase_  				=      node.forward[0]
										lowerCamelCase_  				=      node.value

					if len(__UpperCamelCase	) != 4:
										print()
					assert len(__UpperCamelCase	) == 4
					assert all_values["Key1"] == 12
					assert all_values["Key7"] == 7
					assert all_values["Key5"] == 5
					assert all_values["Key10"] == 10







def   _UpperCamelCase	(		)       ->			int:
					lowerCamelCase_  				=      SkipList()
					assert skip_list.find('Some key'	) is None







def   _UpperCamelCase	(		)       ->			Optional[Any]:
					lowerCamelCase_  				=      SkipList()

					skip_list.insert('Key2'    ,20	)
					assert skip_list.find('Key2'	) == 20

					skip_list.insert('Some Key'    ,10	)
					skip_list.insert('Key2'    ,8	)
					skip_list.insert('V'    ,13	)

					assert skip_list.find('Y'	) is None
					assert skip_list.find('Key2'	) == 8
					assert skip_list.find('Some Key'	) == 10
					assert skip_list.find('V'	) == 13







def   _UpperCamelCase	(		)       ->			List[str]:
					lowerCamelCase_  				=      SkipList()
					skip_list.delete('Some key'	)

					assert len(skip_list.head.forward	) == 0







def   _UpperCamelCase	(		)       ->			List[Any]:
					lowerCamelCase_  				=      SkipList()

					skip_list.insert('Key1'    ,12	)
					skip_list.insert('V'    ,13	)
					skip_list.insert('X'    ,14	)
					skip_list.insert('Key2'    ,15	)

					skip_list.delete('V'	)
					skip_list.delete('Key2'	)

					assert skip_list.find('V'	) is None
					assert skip_list.find('Key2'	) is None







def   _UpperCamelCase	(		)       ->			List[Any]:
					lowerCamelCase_  				=      SkipList()

					skip_list.insert('Key1'    ,12	)
					skip_list.insert('V'    ,13	)
					skip_list.insert('X'    ,14	)
					skip_list.insert('Key2'    ,15	)

					skip_list.delete('V'	)
					assert skip_list.find('V'	) is None
					assert skip_list.find('X'	) == 14
					assert skip_list.find('Key1'	) == 12
					assert skip_list.find('Key2'	) == 15

					skip_list.delete('X'	)
					assert skip_list.find('V'	) is None
					assert skip_list.find('X'	) is None
					assert skip_list.find('Key1'	) == 12
					assert skip_list.find('Key2'	) == 15

					skip_list.delete('Key1'	)
					assert skip_list.find('V'	) is None
					assert skip_list.find('X'	) is None
					assert skip_list.find('Key1'	) is None
					assert skip_list.find('Key2'	) == 15

					skip_list.delete('Key2'	)
					assert skip_list.find('V'	) is None
					assert skip_list.find('X'	) is None
					assert skip_list.find('Key1'	) is None
					assert skip_list.find('Key2'	) is None







def   _UpperCamelCase	(		)       ->			str:
					lowerCamelCase_  				=      SkipList()

					skip_list.insert('Key1'    ,12	)
					skip_list.insert('V'    ,13	)
					skip_list.insert('X'    ,1_42	)
					skip_list.insert('Key2'    ,15	)

					skip_list.delete('X'	)

					def traverse_keys(__UpperCamelCase	):
										yield node.key
										for forward_node in node.forward:
															yield from traverse_keys(__UpperCamelCase	)

					assert len(set(traverse_keys(skip_list.head	)	)	) == 4







def   _UpperCamelCase	(		)       ->			List[str]:
					def is_sorted(__UpperCamelCase	):
										return all(next_item >= item for item, next_item in zip(__UpperCamelCase    ,lst[1:]	)	)

					lowerCamelCase_  				=      SkipList()
					for i in range(10	):
										skip_list.insert(__UpperCamelCase    ,__UpperCamelCase	)
					assert is_sorted(list(__UpperCamelCase	)	)
					skip_list.delete(5	)
					skip_list.delete(8	)
					skip_list.delete(2	)
					assert is_sorted(list(__UpperCamelCase	)	)
					skip_list.insert(-12    ,-12	)
					skip_list.insert(77    ,77	)
					assert is_sorted(list(__UpperCamelCase	)	)







def   _UpperCamelCase	(		)       ->			List[str]:
					for _ in range(1_00	):
										# Repeat test 100 times due to the probabilistic nature of skip list
										# random values == random bugs
										test_insert()
										test_insert_overrides_existing_value()

										test_searching_empty_list_returns_none()
										test_search()

										test_deleting_item_from_empty_list_do_nothing()
										test_deleted_items_are_not_founded_by_find_method()
										test_delete_removes_only_given_key()
										test_delete_doesnt_leave_dead_nodes()

										test_iter_always_yields_sorted_values()







def   _UpperCamelCase	(		)       ->			List[str]:
					lowerCamelCase_  				=      SkipList()
					skip_list.insert(2    ,'2'	)
					skip_list.insert(4    ,'4'	)
					skip_list.insert(6    ,'4'	)
					skip_list.insert(4    ,'5'	)
					skip_list.insert(8    ,'4'	)
					skip_list.insert(9    ,'4'	)

					skip_list.delete(4	)

					print(__UpperCamelCase	)


if __name__ == "__main__":
				import doctest

				doctest.testmod()
				main()







from typing import Optional

from .. import Features, NamedSplit
from ..packaged_modules.text.text import Text
from ..utils.typing import NestedDataStructureLike, PathLike
from .abc import AbstractDatasetReader




class A    (  UpperCamelCase_	):






      def __init__(   self		:	Union[str, Any]     ,  lowercase_		:	NestedDataStructureLike[PathLike]     ,  lowercase_		:	Optional[NamedSplit] = None     ,  lowercase_		:	Optional[Features] = None     ,  lowercase_		:	str = None     ,  lowercase_		:	bool = False     ,  lowercase_		:	bool = False     ,  lowercase_		:	Optional[int] = None     ,  **lowercase_		:	Optional[int]     ,  )   ->		Union[str, Any]:
             """simple docstring"""




             super().__init__(
                 lowercase_     ,  split=lowercase_     ,  features=lowercase_     ,  cache_dir=lowercase_     ,  keep_in_memory=lowercase_     ,  streaming=lowercase_     ,  num_proc=lowercase_     ,  **lowercase_     ,  )
             _lowerCamelCase			:						Optional[int]            =path_or_paths if isinstance(lowercase_     ,  lowercase_					) else {self.split: path_or_paths}
             _lowerCamelCase			:						int            =Text(
                 cache_dir=lowercase_     ,  data_files=lowercase_     ,  features=lowercase_     ,  **lowercase_     ,  )






      def 			lowerCamelCase			(   self		:	Optional[Any]					)   ->		Dict:
             """simple docstring"""




             if self.streaming:
                    _lowerCamelCase			:						Optional[Any]            =self.builder.as_streaming_dataset(split=self.split					)
             # Build regular (map-style) dataset
             else:
                    _lowerCamelCase			:						List[str]            =None
                    _lowerCamelCase			:						int            =None
                    _lowerCamelCase			:						Optional[Any]            =None
                    _lowerCamelCase			:						Any            =None

                    self.builder.download_and_prepare(
                        download_config=lowercase_     ,  download_mode=lowercase_     ,  verification_mode=lowercase_     ,  base_path=lowercase_     ,  num_proc=self.num_proc     ,  )
                    _lowerCamelCase			:						Tuple            =self.builder.as_dataset(
                        split=self.split     ,  verification_mode=lowercase_     ,  in_memory=self.keep_in_memory					)
             return dataset


