What I though I'd do is just tease you with some visuals if you haven't gotten to the point of playing with the staff solution so the themes of problem set 3 are two-fold.

如果你们还没达到使用解决方案的程度,那现在我能做的就是用一些图形为你们梳理一下,习题集3的主题,是两方面的。

哈佛公开课 - 计算机科学课程节选

But a point I'm trying to make is, it sounds like anymore computers have gotten so blazingly fast, why should you worry about it?

但是这里我要讲的一点是，在任何一台计算机,都能这么快的运算的情况下，我们还管效率这个问题干嘛呢？

麻省理工公开课 - 计算机科学及编程导论课程节选

Well, at this point in the story how had I gotten here?

在整个过程中我是如何到达这一步的？

哈佛公开课 - 计算机科学课程节选