题解 | #跳台阶扩展问题#

#
# 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
#
class Solution:
    def jumpFloorII(self , number: int) -> int:
        # write code here
        dp = [0 for i in range(number+1)]
        dp[0], dp[1] = 1, 1
        for i in range(2, number+1):
            dp[i] = dp[i-1] * 2
        return dp[number]