#面向对象设计

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2016-01-16

Sales Rank

A large eCommerce company wishes to list the best-selling products, overall and by category.

2016-01-16

单例是最为最常见的设计模式之一。对于任何时刻，如果某个类只存在且最多存在一个具体的实例，那么我们称这种设计模式为单例。

2016-01-16

How would you design the data structures for a very large social network like Facebook or LinkedIn?

2016-01-16

Imagine you are building some sort of service that will be called by up to 1000 client applications to get sim

2016-01-16

TinyURL是说给你一个长URL，通过某一种编码，你把它压缩成5个字母(数字)长度的code，然后当给出短链接，要能还原出来原来的URL。举个例子：

2016-01-16

If you were designing a web crawler, how would you avoid getting into infinite loops?