摘要: 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? 解法1:不断除去n的因子3 阅读全文
posted @ 2016-01-29 16:33 AprilCheny 阅读(442) 评论(0) 推荐(0) 编辑