代码: class Solution { public: /** * @param n: An integer * @return: An integer */
int climbStairs(int n) { // write your code here if(n == 1 || n ==0){ return 1; } while(--n > 0){ k = a+b; b = a; a = k ; } return k; } };
posted on 2017-08-17 22:49 p666 阅读(95) 评论(0) 编辑 收藏 举报
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