In the game of Sudoku, you are given a large 9 × 9 grid divided into smaller 3 × 3 subgrids. For example,

Determine if a 9x9 Sudoku board is valid. Only the filled cells need to be validated according to the following rules:

Determine if a 9x9 Sudoku board is valid. Only the filled cells need to be validated according to the following rules:

题目class Solution {public: int tag[10]; bool isValidSudoku(vector<vector<char>>& board) { for(int i=0;i<9;i++) { m...