Figure out how you can make it move a little to the left, a little to the right, up and down and then repeat in some kind of looping structure.

就是找出办法让它向左移动一小步，向右移动一小步，向上一小步，向下一小步,像这样不断重复。

哈佛公开课 - 计算机科学课程节选

> Right. Just move it to the top; right?

>，对的，把它放到前面去，对不？

哈佛公开课 - 计算机科学课程节选

It would move to the right all the time.

他的头会总是会歪向右边

耶鲁公开课 - 欧洲文明课程节选

It's going to let j run over the length of the list all right, so it's going to start at some point to move down, and then it's going to let i run over range, that's just one smaller, and what's it doing there?

就在这里，会做什么呢？,我们让j遍历这个列表,好的，它要从某一定开始移动,然后让i也跑遍整个范围，就是比之要小一，会发生什么？

麻省理工公开课 - 计算机科学及编程导论课程节选