题解 |爬楼梯问题

public:
    int jumpFloor(int number) {
        vector<int> res(number,0);
        res[0] = 1;
        res[1] = 2;
        for(int i = 2; i < number; i++){
            res[i] = res[i-1] + res[i-2];
        }
        return res[number-1];
    }