529. Minesweeper

关键：八个方向的点要弄清楚。spa            使用dfs。get   class Solution {          vector<pair<int,int>> link = {{-1,-1},{-1,0},{-1,1},{0,-1},{0,1},{1,-1},{1,0},{1,1}};     int getMineNum(vector<vector<char>>& board,

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