74 lines
2.5 KiB
Python
74 lines
2.5 KiB
Python
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class Solution:
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def isValidSudoku(self, board: list[list[str]]) -> bool:
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plates = []
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for l in board:
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plates.append([])
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for ch_num in l:
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if ch_num.isalnum():
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num = int(ch_num[0])
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else:
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num = -1
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plates[-1].append(num)
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def judge_1(plates, i, j):
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t = plates[i][j]
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for idx, num in enumerate(plates[i]):
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if idx == j: continue
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if num == t: return False
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return True
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def judge_2(plates, i, j):
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t = plates[i][j]
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l = []
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for idx in range(0, 9):
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l.append(plates[idx][j])
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for idx, num in enumerate(l):
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if idx == i: continue
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if num == t: return False
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return True
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def judge_3(plates, i, j):
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row = i // 3 * 3
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col = j // 3 * 3
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l = []
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for idx1 in range(row, row + 3):
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for idx2 in range(col, col + 3):
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if idx1 == i and idx2 ==j: continue
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l.append(plates[idx1][idx2])
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for idx,num in enumerate(l):
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if num == plates[i][j]:
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return False
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return True
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for i in range(0, 9):
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for j in range(0, 9):
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if plates[i][j] == -1: continue
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if not judge_1(plates, i, j):
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return False
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if not judge_2(plates, i, j):
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return False
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if not judge_3(plates, i, j):
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return False
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return True
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board = [["5","3",".",".","7",".",".",".","."]
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,["6",".",".","1","9","5",".",".","."]
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,[".","9","8",".",".",".",".","6","."]
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,["8",".",".",".","6",".",".",".","3"]
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,["4",".",".","8",".","3",".",".","1"]
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,["7",".",".",".","2",".",".",".","6"]
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,[".","6",".",".",".",".","2","8","."]
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,[".",".",".","4","1","9",".",".","5"]
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,[".",".",".",".","8",".",".","7","9"]]
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sol = Solution()
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print(sol.isValidSudoku(board=board))
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board = [["8","3",".",".","7",".",".",".","."]
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,["6",".",".","1","9","5",".",".","."]
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,[".","9","8",".",".",".",".","6","."]
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,["8",".",".",".","6",".",".",".","3"]
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,["4",".",".","8",".","3",".",".","1"]
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,["7",".",".",".","2",".",".",".","6"]
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,[".","6",".",".",".",".","2","8","."]
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,[".",".",".","4","1","9",".",".","5"]
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,[".",".",".",".","8",".",".","7","9"]]
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print(sol.isValidSudoku(board=board))
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