leetcode Valid Sudoku(*)

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 '.'.

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.

      判断数独是否合法，不用验证数独是否可解。依次判断数独的三个条件：横、竖、3X3格子中的9个数字是否重复即可。

class Solution {public:    int cood[9][2]={{0,0},{0,3},{0,6},{3,0},{3,3},{3,6},{6,0},{6,3},{6,6}};    bool isValidSudoku(vector<vector<char> > &board) {        int flag[9];        char temp;        for(int i=0;i<9;i++){            memset(flag,0,sizeof(flag));            for(int j=0;j<9;j++){                temp=board[i][j];                if(temp>='1'&&temp<='9'){                    flag[temp-'1']++;                    if(flag[temp-'1']>1)return false;                }            }            memset(flag,0,sizeof(flag));            for(int j=0;j<9;j++){                temp=board[j][i];                if(temp>='1'&&temp<='9'){                    flag[temp-'1']++;                    if(flag[temp-'1']>1)return false;                }            }        }        for(int i=0;i<9;i++){            memset(flag,0,sizeof(flag));            for(int m=0;m<3;m++){                for(int n=0;n<3;n++){                    char temp=board[cood[i][0]+m][cood[i][1]+n];                    if(temp>='1'&&temp<='9'){                        flag[temp-'1']++;                        if(flag[temp-'1']>1)return false;                    }                }            }        }        return true;    }};