-
So I'm going to solve this by enumerate and check, which is an example of what's called a brute-force algorithm.
你懂的,所以我得靠列举和检验来解决这个问题,这就是我们说的穷举算法。
-
Therefore, we have the chance to innovate and to solve those problems. So, I think there are hopes for that.
因此，我们有机会进行创新来解决这些问题,那就是希望之所在。
-
So, let's think about it, and let's think about what we're actually doing when we solve this.
确实更有效率的解决了问题,好，接下来让我们来想想,看我们实际上是怎么来解决这种问题的。
-
It literally halves the amount of time it takes to solve that problem but we can actually do better.
它能把解决问题时间的缩短一半,但其实我们能做的更好。
-
Well, however we settle that issue, notice there's still one other assumption that all these positions still have in common.
不管我们如何解决这个问题，我们都会发现有一个假定,是这些观点都共有的。
-
We need to think about solutions to this, right from the start of the class, and we already talked about something.
从一上课开始,我们就应该开始,思考这些问题解决方案,现在我们已经谈论了一些了
-
Also we will have students doing workshops and problem-solving where the students will solve problems as a group, a group of three and turn in a common work sheet.
我们还有学生做研讨会,以及问题解决,从而学生可以以三人小组为单位,解决问题,最后上交平常的作业。
-
We all have our version of trying to wrestle with this: if God knows what you're going to do tomorrow, to what extent does it make sense to say that what you do tomorrow you do freely?
我们都有自己试图解决这个问题的方式：,如果上帝压根儿就知道我们明天要做什么，那么，说着明天会自由的从事自己想做的事情,究竟又有什么意义呢？
-
And use a whole array of means: diplomacy, alliances letting other countries do things instead of us.
我们可以通过很多方式解决问题：,建立外交关系，建立联盟,让别的国家也参与,而并非事事亲力亲为。
-
This is where, the way that we should start every problem set or ever problem.
这是我们,解决任何问题的最初一步。
-
In other words, to understand and cope with the problems that we all face, we all need to know and to grapple with the Western experience.
换句话说,为了理解并解决我们所面对的问题,我们必须了解并掌握西方文明的经验
-
The strategy then often is to figure out how, what sort of program can solve these problems and then we go on to ask, "How could this program be instantiated in the physical brain?"
心理学家们通常要先弄清,什么样的程序可以解决这些问题,然后我们会接着问到,"这个程序在我们的生理大脑中,是如何进行编译的"
-
One reason it's been harder to identify stem cells is that they're so rare; the other reason is that it's hard to identify the characteristics of them and it's taken many years to work this out.
干细胞难以识别的原因之一是,这些细胞很少,另一个原因就是,干细胞的特征性蛋白难以识别,我们花了好多年去解决这个问题
-
Newton says F = ma, so to make it a useful result of this problem, we know the mass of this guy.
牛顿指出 F = ma,这对于解决这个问题很有用,我们知道这个物体的质量
-
It's just not possible to solve some of these problems by hand and this isn't even a domain that's necessarily into the world of CS but speaks to you the applicability of it all.
手工处理这些问题似乎有些不大可能,但这还不是,计算机科学要解决的主要问题,我们的目的只是为了告诉你它的用途。
-
Indeed, to get at that question, the first thing we're going to have to think about is what are we?
事实上，要解决这个问题，我们首先要考虑的是，我们是什么？
-
If we weren't so pressed for time, I kinda wanna see how long we could get away with this before it gets awkward, but that, in fact, is an infinite loop t hat's hopefully deliberate.
如果有时间，我想看看,我们需要花多长时间解决这一问题，事实上，它是我故意,使用的无穷循环。
-
That doesn't solve the problem we had before though Then I'm going to append it, and keep the last change for future use.
这样没有解决我们之前的问题,所以我要给它加上一个值，让上一次的变化能够用到未来的例子中。
-
Where is the ingenuity there and how can we leverage that in our own problem solving?
那么其独创性在哪里？,我们在解决实际问题时该怎么去利用它？
-
That's certainly one way to do it, but for computers that's not necessarily the easiest way. So another way of solving it is to do something we already saw last time, which is basically, why not simply enumerate all possible examples and check them?
将一个等式代入另一个等式，这当然是一种办法,但是对电脑来说这绝对不是一件简单的事,所以解决这个问题的办法，正如我们上一次看过的,非常基本？
-
Let's see if we can figure out how to do this.
看看我们能否解决这个问题。
-
We want to capture this idea of problem solving.
我们想抓住解决问题的这个想法。
-
And we'll need a tiebreaking assumption and we'll do the obvious tiebreak.
我们需要假设一个解决平局的方法,我们确实也需要解决平局问题
-
Before we leave this, let's just pose the question we started with.
下课前我们解决一下上课时提的问题
-
So what can we do to solve this?
来解决这个问题，我们能怎么做？
-
We're really not solving the problem.
而实际上我们并没有解决问题。
-
So you can actually say, how do I know which methods are associated with the class? For that, we can call dir. And what it does, is it gives me back a listing of all the things, dir all the methods, that are associated with it.
我们开始建立类了，我们得到了这些方法,因此实际上你可以说，我怎么知道，哪些方法是关联与这些类的？,为了解决这个问题，我们可以调用，这个方法的作用。
-
In Week 2 we'll look at things like cryptography and functions and the tools that by which you begin to assemble solutions to problems; in Week 3 we'll introduce what are generally ; known as algorithms and data structures; mechanisms by which you can solve problems more efficiently, effectively.
第2周,我们学习加密技术及其功能,还会学到一些操作工具,通过这些工具的使用来收集解决问题的办法,第3周,我们将介绍;,算法和数据结构,以及可以更有效地解决问题的机制。
-
So how would we go about solving this problem if I told you not only was there a maximum weight, but there was a maximum volume. Well, we want to go back and attack it exactly the way we attacked it the first time, which was write some mathematical formulas.
有些时候两个都重要,所以如果我告诉你这里不仅有,最大重量还有最大容量，我们应该怎么解决这个问题呢？,好了，我们想回过来然后,和第一次一样看看这个问题。
应用推荐