题解 | #跳台阶#

import java.util.*;


public class Solution {
    /**
     * 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
     */
    public int jumpFloor (int number) {
        if (number <= 1) {
            return 1;
        }
        int s = 0, s1 = 1;
        int n = 1;
        int res = 0;
        while (n <= number) {
            res = s + s1;
            s = s1;
            s1 = res;
            n ++;
        }
        return res;
    }
}