It actually lets you see how to get access to that pointer so you know what you're referring to.

怎么来取得指针,以得知在对什么进行操作,但是这是个简单的设计决定。

麻省理工公开课 - 计算机科学及编程导论课程节选

And the third thing I need to decide is how do I combine? You know, point out to you in the binary search case, combination was trivial. The answer to the final search was just the answer all the way up.

第三个问题是我需要决定如何进行合并？,就你们所知的，在二分查找中所打印出来的,合并的过程是非常简单的,最后查询的结果,就是一路上来所以的结果。

麻省理工公开课 - 计算机科学及编程导论课程节选