class Solution(object): def climbStairs(self, n): """ :type n: int :rtype: int """ pre, cur = 1, 1 for i in range(1,n): pre,cur = cur,pre+cur return cur#测试tmp = Solution()print(tmp.climbStairs(10))
运行结果：
89
方案二：用列表记录每个n对应的值，最后的n取最后一个值即可
class Solution(object): def climbStairs(self, n): """ :type n: int :rtype: int """ if n == 1: return 1 if n == 2: return 2 res = [1, 2] for i in range(2, n): res.append(res[i - 1] + res[i - 2]) return res[-1]#测试tmp = Solution()print(tmp.climbStairs(10))
