依旧和上题一样递归，模板一样
同样的味道，同样的感觉

# -*- coding:utf-8 -*-
class Solution:
    def rectCover(self, number):
        # write code here
        if number==0:
            return 0
        elif number==1:
            return 1
        elif number==2:
            return 2
        res=[0,1,2]
        for i in range(3,number+1):
            res.append(res[i-1]+res[i-2])
        return res[-1]