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And Mark is extraordinary that way as are many of the best entrepreneurs or executives that we've met.
马克就像我们见过的,许多优秀企业家或执行官一样,特别善于倾听。
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These things run for variable amounts of time because they take input, a list of size of some amount.
而这一段的执行时间是可变的,因为它们需要输入一个包含一些元素的列表。
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And we're going to do this initially by looking at a straightforward implementation based upon what's called the decision tree.
我们将要做的是看看一种,直截了当的执行方案,这种方案是基于决策树的。
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We're selling everyday to hundreds of thousands of customers, and so it is an execution kind of business.
我们每天把产品,卖给成千上万的客户，所以也是重视执行的企业。
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He is the founder and the executive director of the Interfaith Youth Core located in Chicago, Illinois.
他是跨信仰青年核心组织的创使人,及执行理事长,该组织总部设于伊利诺州芝加哥市。
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Suppose the Milgram experiment had never been done and it was being done for the first time here.
假设米尔格林姆实验从来没有执行过,今天才第一次做这个实验。
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But the enforcement power, the right to punish, everyone can do the punishing in the state of nature.
而说到执行权，惩罚权，自然状态下人人都能实施惩罚权。
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More gloriously, we could imagine building some kind of a robot that does a variety of tasks.
说得再远一点,想象我们正在开发机器人,那种可以执行各种任务的机器人
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The board hires the president or chief executive officer and other top officers of the company and they serve as employees of the board.
董事会雇用首席执行官,以及公司的其他高层,这些人就是董事会的雇员
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Do we have an open admissions policy ? for all who want to come here?
我们是执行开放式入学政策,让所有想要来的人都能来吗？
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So notice the nesting, I can flow my way through how those tests are actually going to take place.
请注意嵌套，我可以跳过,其中不执行一些语句。
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So now, henceforth, when you say, to declare a function, I am declaring a function here but down here am I quote unquote defining it or implementing it.
从此以后，当你说，声明一个函数，我在这里声明了一个函数,但是到这里我定义它或执行它。
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So the open curly brace followed by the closed curly brace means everything inside of these curly braces should get executed, but only if that first condition is actually true.
所以左花括号后面跟着,右花括号，这意味着花括号里面所有的代码,都应该是要被执行的，但只有当第一个条件是正确的。
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But the two others axis, per the syllabus that we'll explore in great detail in the course and also these are the axis along with which we'll evaluate your submissions are design, in other words how well implemented is this?
但是另外两个中心线，按照教学大纲我们将探究,课程中格外的一些细节,这些中心线是跟,我们评估你们的设计论文是一致的，换句话说，这个执行得怎么样？
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Thus far and in Scratch will pretty much focus on the idea of correctness: Does your code work as we asked it to and as you intended it to?
至此，人们大都是把注意力集中于正确性,观点上：你的代码是不是根据你的意愿,并按照你的要求来执行呢？
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And I want to remind you, that block of code is a set of instructions, the same set of instructions that are going to be done each time through the loop.
我想提醒大家,这块代码是一个指令集,一个每次循环都会被执行的相同指令集,会变化的仅仅是变量的值。
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up employing something called programming, the act of constructing, telling a computer to do your bidding.
你们会使用一种叫做程序设计的方法，或称之为构建，即让计算机去执行你的命令。
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If you want to make sure both conditions are true and they both have to be true for any code to be executed, use ampersand ampersand.
如果你想保证两个条件都成立,或者它们两个都必须为真值，才能执行一些代码，那就使用“&&“
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People make really stupid decisions and so as you know in this course with P sets there are three axes that we look at when evaluating your code.
人们做了一个愚蠢的决定,在这个课程上，通过习题集，当执行你的代码的时候,有三个评估方面。
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So let me expand on that very slightly, and again we did this last time but I want to do one more time. I have to be careful about how I'm actually implementing a list.
我们之前做过了一次,但还是再做一次吧,我得小心的在列表中执行,例如在这个例子中。
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OK, if you look at that then, let's look at what happened when we ran this.
好的，如果再看一下那个，让我们看一下当我们执行这里时会发生什么。
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What that means, in a stored-program computer, is that I can provide to the computer a sequence of instructions describing the process I want it to execute.
它的意思就是说，我可以给一个存储程序计算机,提供一系列,描述我希望,能执行的过程的指令。
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Let's look at a straightforward implementation of this.
让我们看看这个方案的,直接执行方案。
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Right? You can see that this ought to be linear, because what am I doing?
这个算法应该是线性复杂度的，因为这个算法是怎么执行的呢？
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I'm not wasting time typing out arguments and implementing more complicated function.
我不会在浪费时间在打印输出参数上,我执行了更复杂的程序。
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That is, it's at most the length of the actual number of instructions.
也就是，它至多会执行,和实际指令数一样多的指令。
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Having reached the end of the block, go back up and check the test.
执行到了这块代码的最后，程序会回去再做一次测试。
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We might say, even if we are smart enough to build programs that can, by mechanistically following the program, do things we've never thought of.
我们或许说,即使我们非常聪明,可以编制些,能够机械地执行指令的程序,做一些我们从来没想到的事情
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So what we've seen is I've run it twice here.
我们现在看到的就是,我执行了这条打印语句两次。
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So in your mind, if you are now the computer program and you are executing this thing from top to bottom, what just has happened verbally is we are stepping into the line of code that says sort left half of elements.
在你们看来，如果你现在是计算机程序,正在从上到下执行一系列指令，刚才所发生的就是我们现在已执行到了这行代码,它告诉你要对左半部分的元素排序。
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