2016年1月23日
[leetcode] Bulb Switcher
摘要： 题目：There are n bulbs that are initially off. You first turn on all the bulbs. Then, you turn off every second bulb. On the third round, you toggle eve... 阅读全文
posted @ 2016-01-23 21:35 lasclocker 阅读(210) 评论(0) 推荐(0) 编辑