2018年7月26日
319. Bulb Switcher (Math, Pattern)
摘要： 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 every 阅读全文
posted @ 2018-07-26 08:41 wz30 阅读(139) 评论(0) 推荐(0) 编辑