Well there are a couple of interesting intermediate values here, right? There's tmp.

回去再看第一段代码,那么在这里我该关注什么呢？

麻省理工公开课 - 计算机科学及编程导论课程节选

tmp The idea was to make a copy of res and temp.

也就是。

麻省理工公开课 - 计算机科学及编程导论课程节选

So this thing here that starts with slash temp, that's pretty useless information.

错误信息从/tmp开始，其实这是无用信息。

哈佛公开课 - 计算机科学课程节选

I find something to tmp. And I need to make sure maybe I haven't messed up res.

有tmp，有res，对不对？,我需要对照下tmp，也需要确认下。

麻省理工公开课 - 计算机科学及编程导论课程节选

It's reasonable because it's meant TMP for temporary purposes just to call it temp or T-M-P for short, X and I can define temp as -- why don't I set it as equal to X, initially, because now that I've stored X in a separate chunk of memory, I can now change its value and then I can say Y gets, not X, but temp, and so now I've actually swapped these values.

这是合理的，因为它是为,暂时的目的，只要叫它Temp或简称它为，我可以定义temp为--为什么我不把它设定为等于，最初的，因为现在我把X存储在一个单独的内存块中,我现在可以改变它的值，然后我说Y等于，不是X，而是temp，所以现在我交换这些值。

哈佛公开课 - 计算机科学课程节选