




"""simple docstring"""






import itertools
import string
from collections.abc import Generator, Iterable





def 							UpperCAmelCase		(		snake_case			:					Iterable[str]      ,       snake_case			:					int    ):
					_lowerCAmelCase:Union[str, Any]									=  iter(snake_case    )
					while True:
										_lowerCAmelCase:Dict									=  tuple(itertools.islice(snake_case      ,       snake_case    )    )
										if not chunk:
															return
										yield chunk





def 							UpperCAmelCase		(		snake_case			:					str    ):
					_lowerCAmelCase:int									=  ''''''.join([c.upper() for c in dirty if c in string.ascii_letters]    )
					_lowerCAmelCase:Dict									=  ''''''

					if len(snake_case    ) < 2:
										return dirty

					for i in range(len(snake_case    ) - 1    ):
										clean += dirty[i]

										if dirty[i] == dirty[i + 1]:
															clean += "X"

					clean += dirty[-1]

					if len(snake_case    ) & 1:
										clean += "X"

					return clean





def 							UpperCAmelCase		(		snake_case			:					str    ):
					# I and J are used interchangeably to allow
					# us to use a 5x5 table (25 letters)
					_lowerCAmelCase:int									=  '''ABCDEFGHIKLMNOPQRSTUVWXYZ'''
					# we're using a list instead of a '2d' array because it makes the math
					# for setting up the table and doing the actual encoding/decoding simpler
					_lowerCAmelCase:Tuple									=  []

					# copy key chars into the table if they are in `alphabet` ignoring duplicates
					for char in key.upper():
										if char not in table and char in alphabet:
															table.append(snake_case    )

    # fill the rest of the table in with the remaining alphabet chars
					for char in alphabet:
										if char not in table:
															table.append(snake_case    )

					return table





def 							UpperCAmelCase		(		snake_case			:					str      ,       snake_case			:					str    ):
					_lowerCAmelCase:Tuple									=  generate_table(snake_case    )
					_lowerCAmelCase:int									=  prepare_input(snake_case    )
					_lowerCAmelCase:int									=  ''''''

					# https://en.wikipedia.org/wiki/Playfair_cipher#Description
					for chara, chara in chunker(snake_case      ,       2    ):
										_lowerCAmelCase							,   _lowerCAmelCase:Dict									=  divmod(table.index(snake_case    )      ,       5    )
										_lowerCAmelCase							,   _lowerCAmelCase:List[str]									=  divmod(table.index(snake_case    )      ,       5    )

										if rowa == rowa:
															ciphertext += table[rowa * 5 + (cola + 1) % 5]
															ciphertext += table[rowa * 5 + (cola + 1) % 5]
										elif cola == cola:
															ciphertext += table[((rowa + 1) % 5) * 5 + cola]
															ciphertext += table[((rowa + 1) % 5) * 5 + cola]
										else:  # rectangle
															ciphertext += table[rowa * 5 + cola]
															ciphertext += table[rowa * 5 + cola]

					return ciphertext





def 							UpperCAmelCase		(		snake_case			:					str      ,       snake_case			:					str    ):
					_lowerCAmelCase:List[Any]									=  generate_table(snake_case    )
					_lowerCAmelCase:Optional[Any]									=  ''''''

					# https://en.wikipedia.org/wiki/Playfair_cipher#Description
					for chara, chara in chunker(snake_case      ,       2    ):
										_lowerCAmelCase							,   _lowerCAmelCase:Any									=  divmod(table.index(snake_case    )      ,       5    )
										_lowerCAmelCase							,   _lowerCAmelCase:Dict									=  divmod(table.index(snake_case    )      ,       5    )

										if rowa == rowa:
															plaintext += table[rowa * 5 + (cola - 1) % 5]
															plaintext += table[rowa * 5 + (cola - 1) % 5]
										elif cola == cola:
															plaintext += table[((rowa - 1) % 5) * 5 + cola]
															plaintext += table[((rowa - 1) % 5) * 5 + cola]
										else:  # rectangle
															plaintext += table[rowa * 5 + cola]
															plaintext += table[rowa * 5 + cola]

					return plaintext












"""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()






