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Valid Sudoku

题目：

Determine if a Sudoku is valid, according to: Sudoku Puzzles - The Rules .

The Sudoku board could be partially filled, where empty cells are filled with the character '.' .

Valid Sudoku

A partially filled sudoku which is valid.

Note:A valid Sudoku board (partially filled) is not necessarily solvable. Only the filled cells need to be validated.

分析：题目其实没有难度，按照它的要求做就行了。代码已通过检测

 1 def isValidSudoku(self, board):  2         row = 0  3         column = 0  4         flag = 0  5           6         #查看每一行是否符合规则  7         while row < 9:  8             i = 0  9             temp = [] 10             while i < 9: 11                 if board[row][i] != '.': 12                     if board[row][i] not in temp: 13                         temp.append(board[row][i]) 14                         i += 1 15                     else: 16                         flag = 1 17                         break 18                 else: 19                     i += 1 20              21             if flag == 1: 22                 break 23             else: 24                 row += 1 25                  26         if flag == 1: 27             return False 28         else: 29             #查看每一行是否符合规则 30             while column < 9: 31                 j = 0 32                 temp = [] 33                 while j < 9: 34                     if board[j][column] != '.': 35                         if board[j][column] not in temp: 36                             temp.append(board[j][column]) 37                             j += 1 38                         else: 39                             flag = 1 40                             break 41                     else: 42                         j += 1 43                  44                 if flag == 1: 45                     break 46                 else: 47                     column += 1 48              49             if flag == 1: 50                 return False 51             else: 52                 #查看每个九宫格是否符合规则 53                 row = 0 54                 column = 0 55                 while row < 7: 56                     while column < 7: 57                         r = 0 58                         c = 0 59                         temp = [] 60                         while r < 3: 61                             while c < 3: 62                                 if board[row+r][column+c] != '.': 63                                     if board[row+r][column+c] not in temp: 64                                         temp.append(board[row+r][column+c]) 65                                         c += 1 66                                     else: 67                                         flag = 1 68                                         break 69                                 else: 70                                     c += 1 71                             if flag == 1: 72                                 break 73                             else: 74                                 r += 1 75                                 c = 0 76                          77                         if flag == 1: 78                             break 79                         else: 80                             column += 3 81                      82                     if flag == 1: 83                         break 84                     else: 85                         row += 3 86                         column = 0 87              88             if flag == 1: 89                 return False 90             else: 91                 return True