"And because small retailers don't have economies of scale to be able to order a lot of merchandise at once, they are not able to negotiate the best prices or offer the best deals to their shoppers."
VOA: standard.2009.12.20
You got an extra hint here in terms of the order, so even if you had just forgotten what I said, sometimes it's not a terrible idea just to put it in the order it's written, that can give you a lot of clues as well.
其实大家还可以发现一个额外的提示,因此即使你忘了我刚才说的,有时候直接按照这个顺序,排列也不失为一个办法,这也可以给你很多提示。
Hmm. Well, wait a minute. If I want to sort a list, I'll take one element, I've got to look at probably a lot of the other elements in the list in order to decide where it goes. And that suggests it's going to depend on how long the list is.
我会取一个元素,然后去查看列表,来决定要把那个元素放到哪里,这就意味着它依赖于列表的长度,对,这没什么说服力,但是事实上。
I know it's gonna take me a lot of work on the order of N squared steps to sort these things.
要对它们排序就要进行大量的工作,大概需要N平方步。
What used to be a large french fry at McDonald's is now the small French fries and so a lot of people will order something, like they'll go to a restaurant and they'll say, well would you like small, medium or large?
现在小包的麦当劳薯条,过去曾是被叫做大包,所以当人们走进饭店,点餐的时候营业员问,你想要小包中包还是大包的薯条
So it's really neat to think that your counterparts 100 years ago right here at MIT could have been sitting in a class where they had Lewis as their lecturer, and he's putting forth these ideas -- these are actually his lecture notes, even though it wasn't even published yet, and giving this idea of Lewis structure, which is exactly what we keep using today in order to make a lot of these predictions.
因此会有很棒的感觉,当想一想一百年以前像你们一样,在这上学的同学可能正坐在教室里,听路易斯讲课,而他正在提出这些想法-,-而这些正是他的课堂讲义,尽管当时还没有发表,但已经给出了路易斯结构的思想,这正是我们直到今天都一直在用的,用它来做很多预测。
But very soon will you find that if you're writing programs with lots and lots of functions, and some might call these, and these might call these, you can come up very soon with scenarios where you can not order them top to bottom, because everything is comingled, and there's a lot of cross talk among all of your functions.
但是不久后你们会发现你们写的程序中,有很多很多的函数,有的函数调用这些函数,这些函数又调用另外的函数,你不能用脚本,把它们从上到下排序,因为所有函数相互混合,在你的函数中也有很多交叉。
If any of you haven't been to the website I urge you to do that, because it has all the information about requirements, the order of readings, a lot of supplementary information that may be helpful, interesting links to other resources and things like that, so please see the course website.
我希望大家可以尽快登陆那个网站,因为所有的要求都在上面,包括阅读要求,很多有帮助的补充信息,还有些有趣的资源链接,所以请大家一定要去看看
I may not want to do the full range of this, but I may decide I have to use a lot of gigabytes of space in order to do a trade off.
哈希成一个整数,我不想完整的去做这件事,但是我可以想像我需要用许多G的空间,去完成空间和时间之间的权衡。
OK. A whole lot of work to basically say again, order b is linear.
这个方法是随b线性增长的,但是这方法也不错。
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