题解 | #跳台阶# | C++

class Solution {
public:
    /**
     * 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
     *
     * 
     * @param number int整型 
     * @return int整型
     */
    int jumpFloor(int number) {
        int one = 1, two = 2;
        if (number < 3) return number;
        int ans = 0;
        for (int i = 3; i <= number; i++) {
            ans = one + two;
            one = two;
            two = ans;
        }
        return ans;
    }
};