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So,when we went for our annual check-up, I asked the doctor if I was right.
VOA: special.2010.08.18
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And this is the same periodic table that you're going to get in your exams, so it's good to practice doing your problem-sets with that periodic table so you're not relying on having the double check right there of seeing what the electron configuration is.
这也是你们考试时会用到的相同的表,这样你们就不会，所以使用周期表来做问题集,是很好的练习,这样你们就,不会依赖于再次确认,电子构型是什么了。
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First of all, having read in that value, I can check to see, is it of the right type?
首先，读一下这个值，我们可以来检查看看是不是正确的类型？
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So check that I counted right, 1, 2, 3, 4, 5, 6, 7, 8 and 1, 2, 3, 4, 5, 6, 7.
查一下我数的对吗,12345678,和1234567
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All right, so let's just do a reality check here.
好，让我们来做一个现实性的检验。
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So supposed that I give you 16 elements to sort, well, following the logic before, the running time involved in sorting 16 elements is gonna be twice the running time 16 of sorting 8 elements, left half and right half plus 16 - and again, a little sanity check, 16 means-- just the merge steps, right?
现在要对16个元素进行排序，根据之前的逻辑，对16个元素排序,要花的时间是对8个元素排序所花时间的,2倍，分别用于左半部分和右半部分，再加上6,这里16是-,做合并的步数，对吗？
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And that you might look at, for example, that first example, and say, man by this stage it was already sorted, yet it had to go through and check that the third element was in the right place, and then the fourth and then the fifth and then the six.
你可能会去看看例如第一个例子，然后要抱怨，到这里,它已经是排好序的了,但他还是得去遍历查看,第三个元素是不是在正确的位置,然后第四个，第五个，第六个。
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So that's the second thing I've just highlighted here, is that I now have the ability to check whether it does the right thing.
你知道的，一个虚数,但是返回虚数就没有什么价值了,那么这是我想要强调的第二件事情。
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And I won't ask you to check whether it got the right answer.
我不用你算这到底,是不是正确的答案。
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You can check that both firms are then playing a best response, so that's all right.
你们可以验证,两家公司都进行了最佳对策,那是正确的
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And again, anytime I'm doing algebra on the board, someone should check me at home, so just have a quick look at that. Is that right?
还有,每回我在黑板上演算,你们都帮我检查一下,看看有没有算错,这次算对了吗
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I'm going to check to see if it's right or not.
然后看它是否正确。
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The format is the same. I'm going to ask for some input, and then I am going to use that procedure to check, is this the right type of value. And I'm trying to use that to do the coercion if you like. Same thing if it works, I'm going to skip that, if it not, it's going to throw the exception.
格式是一样的，我需要一些输入,然后我要用一个过程来检查,是否是正确的值,然后你就可以做强制转换了,如果能运行，那是一样的，我打算跳过这段，如果不正确，那就会抛出一个异常。
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On the other hand, as I said, never trust a programmer to do the right thing so we're going to check it.
另外，如我之前提到的，别相信程序员会一直保持正确,所以我们才要。
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And just to look ahead a little bit, you could easily imagine that I might want to not just put a statement in there, what the specs are, I might want to put some constraints. Some specific things to check for, to make sure that you're calling the code right.
这不仅是抽象的概念还有规范的概念，我们再往前看看,你可以简单的想象得到，我不仅仅是想在这里加一个声明,这些规范说明中我还想加一些约束，我们要注意一些特殊的事情。
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If there are less than two elements there I just check one or both of those to see if I'm looking for the right thing.
列表里是否剩余超过两个元素？,是否剩余不足两个元素,这里面我就挑一两项来检查下是否运行正常。
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All right, and let's just check this out, because I want to make a point of this, let's go back and do the following.
好，让我们记住这一点，因为我想要强调下这里，我们回过头去做如下的操作：
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My point is, go check the course website, which by the way is right there.
我的意思是你们要去核查一下，课程网站上的正确时间。
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The check needs to be somewhere in the program, but this is not the right place for it.
这个check必须出现在程序中，但是放在这儿是不对的。
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All right, we're-- well actually, I should say that better, we first check to see, is x 0 greater than or equal to zero, if it's not, then we come down here and we print something out, otherwise we run through a little loop to get the answer, and then we check it and we spit something out.
然后我们运行一个小循环,好了，我们现在来看看,如果x≥0或者x＜,我们看这儿,我们会输出一些内容,或者我们运行一个小循环来获取答案,然后我们检验一下，然后得到结果。
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And then I run a loop in which I read something in, I check to see if it's the right type, if it is, I change that variable to say it's now the correct type, which means the next time through the loop, I'm going to say I'm all set and I'm going to bounce out.
因为我还没输入，然后我运行一个循环,循环内部我输入一些东西,然后看看是不是正确的类型,如果是的话我改变input，Ok为真，来证明输入数是正确的类型，这就意味着下一次运行这个循环的时候,就可以跳出循环继续执行了。
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And so if incidentally, you're a representative of a student group and the alike and your Google calendar is not -- in here, you can check just by flipping through the various-- we have over 200 calendars right now and you can search through them here.
如果你是一个学生团体的代表,你的Google日历在此不存在,你可以检查其他各种各样的-,目前我们有200多种日历,你可以在它们之中进行查找。
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It finds one syntax error at a time, so you have to be a little patient to do it, but you can check that the syntax is right.
它一次会找到一个语法错误，所以你们必须要有点耐心，但是你们可以检查出语法是否正确。
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We need to check another entrant from the outside, left wing or right wing, we need to check another entrant in the middle, there is only one possible one there, and there's a third kind of deviation we should check, what's the third type of deviation?
我们需要验证另外一个外部的参选人,左派或右派,我们需要验证另外一个中间的参选人,只有一个可能参选的人,还有第三种要验证的偏差类型,第三种偏差类型是什么
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So I'm going to check to see if- really can't read that thing, let me do it this way-- right, I'm going to increase the number of compares, and I'm going to check to say, is the thing I'm looking for at the i'th spot in the list?
让我们这样做吧-好-,我会去增加比较次数的计数器,然后去看看在第i处的元素,是不是我要找的呢？,这里s的意思就是,给定数组的？
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The reason for pulling this out is, what you're going to see is, that in most languages, all right, Python comes built-in with something that will check your static, sorry, your syntax for you.
讲这些的原因在于，你们将要看到的是，在绝大部分语言中，好的，Python中带着一些,会检查你的static的东西，抱歉，是你的语法。
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Is the first part. That says, I took the branch through here that eventually got to the end and said, there wasn't a solution, in which case I'mgoing to print out, there ain't no solution, otherwise I'll print out the pieces. All right, let's check it out. Ah, what did I say?
我是否返回了特殊的none值？是第一部分,这里的意思是我从这个分支,走到这儿最终走到最后，并告诉我这条路没有解决方案，也就是我想要打印的结果,没有符合的结果，否则我会把它们输出来？
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