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valid-sudoku.py
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valid-sudoku.py
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class Solution:
def isValidSudoku(self, board: list[list[str]]) -> bool:
i = 0
j = 0
blocks = []
while i < (len(board)):
while j < (len(board[i])):
block = self.__extract_block__(board, i, j)
if (self.__check_block__(block) == True):
blocks.append(block)
else:
return False
j += 3
i += 3
j = 0
for b in range(len(blocks)):
if (self.__validate__(blocks, b) == False):
return False
return True
def __validate__(self, blocks, block_position):
f = []
for i in range(len(blocks)):
if (i != block_position):
for number in blocks[block_position]:
if (number != '.'):
if (number in blocks[i]):
if (blocks[i].index(number) == blocks[block_position].index(number)):
f.append((blocks[block_position], blocks[i]))
print(f)
return True
def __extract_block__(self, board, x, y):
return (
[
board[x][y], board[x + 1][y], board[x + 2][y],
board[x][y + 1], board[x + 1][y + 1], board[x + 2][y + 1],
board[x][y + 2], board[x + 1][y + 2], board[x + 2][y + 2]
]
)
def __check_block__(self, block):
for i in block:
if (i != '.'):
if (block.count(i) > 1):
return False
return True
Solution().isValidSudoku([
["5","3",".", ".","7",".", ".",".","."],
["6",".",".", "1","9","5", ".",".","."],
[".","9","8", ".",".",".", ".","6","."],
["8",".","." ,".","6",".", ".",".","3"],
["4",".",".", "8",".","3", ".",".","1"],
["7",".",".", ".","2",".", ".",".","6"],
[".","6",".", ".",".",".", "2","8","."],
[".",".",".", "4","1","9", ".",".","5"],
[".",".",".", ".","8",".", ".","7","9"]
])
# Solution().isValidSudoku([
# ["8","3",".",".","7",".",".",".","."],
# ["6",".",".","1","9","5",".",".","."],
# [".","9","8",".",".",".",".","6","."],
# ["8",".",".",".","6",".",".",".","3"],
# ["4",".",".","8",".","3",".",".","1"],
# ["7",".",".",".","2",".",".",".","6"],
# [".","6",".",".",".",".","2","8","."],
# [".",".",".","4","1","9",".",".","5"],
# [".",".",".",".","8",".",".","7","9"]
# ])