1，Triangle

1 int mininumTotal(vector<vector<int>>& triangle)  {
2     for (int i = triangle.size() - 2; i >= 0; --i) {  
3         for (int j = 0; j < i + 1; ++j) {
4             // 从下往上依次保存当前路径的最小值，上层只会用到下层的最小值
5             triangle[i][j] += min(triangle[i + 1][j], triangle[i + 1][j + 1]);
6         }
7     }
8     return triangle[0][0];
9 }

triangle