




"""simple docstring"""






import timeit

import numpy as np

import datasets
from datasets.arrow_writer import ArrowWriter
from datasets.features.features import _ArrayXD





def 							UpperCAmelCase		(		snake_case			:					Union[str, Any]    ):
					def wrapper(*snake_case			:					Union[str, Any]      ,       **snake_case			:					Optional[Any]    ):
										_lowerCAmelCase:str									=  timeit.default_timer()
										_lowerCAmelCase:Optional[int]									=  func(*snake_case      ,       **snake_case    )
										_lowerCAmelCase:Tuple									=  timeit.default_timer() - starttime
										return delta

					_lowerCAmelCase:Optional[Any]									=  func.__name__

					return wrapper





def 							UpperCAmelCase		(		snake_case			:					dict      ,       snake_case			:					List[str]=100      ,       snake_case			:					List[str]=None    ):
					_lowerCAmelCase:Union[str, Any]									=  []
					_lowerCAmelCase:Optional[Any]									=  seq_shapes or {}
					for i in range(snake_case    ):
										_lowerCAmelCase:Tuple									=  {}
										for col_id, (k, v) in enumerate(features.items()    ):
															if isinstance(snake_case      ,       _ArrayXD    ):
																				_lowerCAmelCase:Union[str, Any]									=  np.random.rand(*v.shape    ).astype(v.dtype    )
															elif isinstance(snake_case      ,       datasets.Value    ):
																				if v.dtype == "string":
																									_lowerCAmelCase:Union[str, Any]									=  '''The small grey turtle was surprisingly fast when challenged.'''
																				else:
																									_lowerCAmelCase:Optional[int]									=  np.random.randint(10      ,       size=1    ).astype(v.dtype    ).item()
															elif isinstance(snake_case      ,       datasets.Sequence    ):
																				while isinstance(snake_case      ,       datasets.Sequence    ):
																									_lowerCAmelCase:Optional[int]									=  v.feature
																				_lowerCAmelCase:int									=  seq_shapes[k]
																				_lowerCAmelCase:Any									=  np.random.rand(*snake_case    ).astype(v.dtype    )
															_lowerCAmelCase:str									=  data

										dummy_data.append((i, example)    )

					return dummy_data





def 							UpperCAmelCase		(		snake_case			:					List[Any]      ,       snake_case			:					Union[str, Any]      ,       snake_case			:					Optional[Any]=100      ,       snake_case			:					List[str]=None    ):
					_lowerCAmelCase:Tuple									=  generate_examples(snake_case      ,       num_examples=snake_case      ,       seq_shapes=snake_case    )

					with ArrowWriter(features=snake_case      ,       path=snake_case    ) as writer:
										for key, record in dummy_data:
															_lowerCAmelCase:List[str]									=  features.encode_example(snake_case    )
															writer.write(snake_case    )

										_lowerCAmelCase							,   _lowerCAmelCase:int									=  writer.finalize()

					if not num_final_examples == num_examples:
										raise ValueError(
										    F'Error writing the dataset, wrote {num_final_examples} examples but should have written {num_examples}.'    )

					_lowerCAmelCase:Tuple									=  datasets.Dataset.from_file(filename=snake_case      ,       info=datasets.DatasetInfo(features=snake_case    )    )

					return dataset












"""simple docstring"""






def 							UpperCAmelCase		(		snake_case			:					str      ,       snake_case			:					str    ):
					assert x is not None
					assert y is not None

					_lowerCAmelCase:Optional[Any]									=  len(snake_case    )
					_lowerCAmelCase:Tuple									=  len(snake_case    )

					# declaring the array for storing the dp values
					_lowerCAmelCase:Optional[Any]									=  [[0] * (n + 1) for _ in range(m + 1    )]  # noqa: E741

					for i in range(1      ,       m + 1    ):
										for j in range(1      ,       n + 1    ):
															_lowerCAmelCase:Optional[int]									=  1 if x[i - 1] == y[j - 1] else 0

															_lowerCAmelCase:int									=  max(l[i - 1][j]      ,       l[i][j - 1]      ,       l[i - 1][j - 1] + match    )

					_lowerCAmelCase:List[Any]									=  ''''''
					_lowerCAmelCase							,   _lowerCAmelCase:Dict									=  m, n
					while i > 0 and j > 0:
										_lowerCAmelCase:Any									=  1 if x[i - 1] == y[j - 1] else 0

										if l[i][j] == l[i - 1][j - 1] + match:
															if match == 1:
																				_lowerCAmelCase:Any									=  x[i - 1] + seq
															i -= 1
															j -= 1
										elif l[i][j] == l[i - 1][j]:
															i -= 1
										else:
															j -= 1

					return l[m][n], seq


if __name__ == "__main__":
				UpperCamelCase__						=			'''AGGTAB'''
				UpperCamelCase__						=			'''GXTXAYB'''
				UpperCamelCase__						=			4
				UpperCamelCase__						=			'''GTAB'''

				UpperCamelCase__						,							UpperCamelCase__						=			longest_common_subsequence(a, b)
				print('''len =''', ln, ''', sub-sequence =''', subseq)
				import doctest

				doctest.testmod()






