
"""simple docstring"""



from typing import Optional

import pyspark

from .. import Features, NamedSplit
from ..download import DownloadMode
from ..packaged_modules.spark.spark import Spark
from .abc import AbstractDatasetReader







class        lowercase__      (							lowerCamelCase__       ):


			def __init__(				self					:  Union[str, Any]       ,	snake_case__					:  pyspark.sql.DataFrame       ,	snake_case__					:  Optional[NamedSplit] = None       ,	snake_case__					:  Optional[Features] = None       ,	snake_case__					:  bool = True       ,	snake_case__					:  str = None       ,	snake_case__					:  bool = False       ,	snake_case__					:  str = None       ,	snake_case__					:  bool = True       ,	snake_case__					:  str = "arrow"       ,	**snake_case__					:  Tuple       ,	):
										super().__init__(
										    split=__A       ,	features=__A       ,	cache_dir=__A       ,	keep_in_memory=__A       ,	streaming=__A       ,	**__A       ,	)
										lowerCamelCase_	:							Union[str, Any]									=load_from_cache_file
										lowerCamelCase_	:							Union[str, Any]									=file_format
										lowerCamelCase_	:							int									=Spark(
										    df=__A       ,	features=__A       ,	cache_dir=__A       ,	working_dir=__A       ,	**__A       ,	)


			def      UpperCAmelCase__						(				self					:  Optional[int] ):
										if self.streaming:
																	return self.builder.as_streaming_dataset(split=self.split )
										lowerCamelCase_	:							Optional[Any]									=None if self._load_from_cache_file else DownloadMode.FORCE_REDOWNLOAD
										self.builder.download_and_prepare(
										    download_mode=__A       ,	file_format=self._file_format       ,	)
										return self.builder.as_dataset(split=self.split )











"""simple docstring"""



def 			_snake_case    (					lowerCamelCase__     :   Optional[Any]  )    ->     Optional[int]:
							if not head:
														return True
							# split the list to two parts
							lowerCamelCase_							,						lowerCamelCase_	:							Union[str, Any]									=head.next, head
							while fast and fast.next:
														lowerCamelCase_	:							Optional[Any]									=fast.next.next
														lowerCamelCase_	:							str									=slow.next
							lowerCamelCase_	:							Tuple									=slow.next
							lowerCamelCase_	:							Any									=None  # Don't forget here! But forget still works!
							# reverse the second part
							lowerCamelCase_	:							List[str]									=None
							while second:
														lowerCamelCase_	:							Any									=second.next
														lowerCamelCase_	:							Union[str, Any]									=node
														lowerCamelCase_	:							Union[str, Any]									=second
														lowerCamelCase_	:							Optional[Any]									=nxt
							# compare two parts
							# second part has the same or one less node
							while node:
														if node.val != head.val:
																					return False
														lowerCamelCase_	:							List[str]									=node.next
														lowerCamelCase_	:							Optional[Any]									=head.next
							return True

def 			_snake_case    (					lowerCamelCase__     :   str  )    ->     Optional[int]:
							if not head or not head.next:
														return True

							# 1. Get the midpoint (slow)
							lowerCamelCase_	:							List[str]									=head
							while fast and fast.next:
														lowerCamelCase_							,						lowerCamelCase_	:							Union[str, Any]									=fast.next.next, slow.next

							# 2. Push the second half into the stack
							lowerCamelCase_	:							List[Any]									=[slow.val]
							while slow.next:
														lowerCamelCase_	:							List[Any]									=slow.next
														stack.append(slow.val  )

							# 3. Comparison
							while stack:
														if stack.pop() != cur.val:
																					return False
														lowerCamelCase_	:							Union[str, Any]									=cur.next

							return True

def 			_snake_case    (					lowerCamelCase__     :   Dict  )    ->     Optional[Any]:
							if not head or not head.next:
														return True
							lowerCamelCase_	:							Union[str, Any]									={}
							lowerCamelCase_	:							List[Any]									=0
							while head:
														if head.val in d:
																					d[head.val].append(lowerCamelCase__  )
														else:
																					lowerCamelCase_	:							List[str]									=[pos]
														lowerCamelCase_	:							Optional[int]									=head.next
														pos += 1
							lowerCamelCase_	:							Union[str, Any]									=pos - 1
							lowerCamelCase_	:							Optional[int]									=0
							for v in d.values():
														if len(lowerCamelCase__  ) % 2 != 0:
																					middle += 1
														else:
																					lowerCamelCase_	:							Optional[Any]									=0
																					for i in range(0    ,						len(lowerCamelCase__  )  ):
																												if v[i] + v[len(lowerCamelCase__  ) - 1 - step] != checksum:
																																			return False
																												step += 1
														if middle > 1:
																					return False
							return True



