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) {
        // write code here
        if (number <= 1) {
            return 1;
        }

        int[] a = new int[number];

        a[0] = 1;
        a[1] = 2;

        for (int i = 2; i < number; i++) {
            a[i] = a[i - 1] + a[i - 2];
        }

        return a[number - 1];
    }
}