Google 2011校园招聘笔试题
刚在群里发现朋友发的，据说是Google的招聘笔试题，不知道真假，觉得有趣，分享下。 Google的2011年校园招聘宣讲会分别在北大和清华举行，其中北大本来是350人的会场，去了大约600多人，爆满，那场面绝对是人山人海，彩旗飘飘。经过了大约一个小时多的宣讲和
刚在群里发现朋友发的，据说是Google的招聘笔试题，不知道真假，觉得有趣，分享下。
Google的2011年校园招聘宣讲会分别在北大和清华举行，其中北大本来是350人的会场，去了大约600多人，爆满，那场面绝对是人山人海，彩旗飘飘。经过了大约一个小时多的宣讲和问答，开始现场笔试环节，一共10个选择题和三个算法题，只有选择题答对了6个以上的人才有机会让面试官看你后面的算法题。然后明天下午会通知笔试通过的人进行面试，google的效率就像其搜索引擎一样迅速，效率可见一般。
其中前10个选择题中有一个特别雷人的，题如下：
现在北京有一套房子，价格200万，假设房价每年上涨10%，一个软件工程师每年固定能赚40万。如果他想买这套房子，不贷款，不涨工资，没有其他收入，每年不吃不喝不消费，那么他需要几年才能攒够钱买这套房子？
a, 5年
b, 7年
c, 8年
d, 9年
e, 永远买不起
==========================================================
y1 = 1.1^x * 200
y2 = 40 * x
用中学的作图解题，上面的曲线和下面的直线是没有交点的。
———-
另外不作图简单计算也方便
1：200/40=5， 1.1^5*200 >322
2: 322/40>8, 1.1 ^8*200>400
3: 400/40 >10, 1.1 ^10*200>500
已经看出来了，后面的增长每年已经超过40，因此可知道答案
———-
f(x)=y1-y2
求导,得解
———-
如果将题目改一下呢？如果每年的工资也已10%的速率增长呢？是否有交点？
Related posts:
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- MySQL Cluster致命缺点
- Handler-Socket Plugin for MySQL – SQL的功能、NoSQL的性能
? 谭俊青 发布在 MySQL性能、MySQL Cluster集群、MySQL HA高可用等研究 - MySQL实验室, 2010.
可以任意转载, 但转载时务必以超链接形式标明文章原始出处 和 作者信息。
链接: http://www.mysqlab.net/blog/2010/10/google-2011校园招聘笔试题/
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