摘要: 题目描述:Given an integer, write a function to determine if it is a power of three.Follow up:Could you do it without using any loop / recursion?解题思路:对给定的数... 阅读全文
posted @ 2016-01-10 21:23 scottwang 阅读(222) 评论(0) 推荐(0) 编辑