C# 的随机数生成器是如何工作的? [英] How does C#'s random number generator work?

问题描述

我只是想知道 C# 中的随机数生成器是如何工作的.我也很好奇如何编写一个程序来生成从 1 到 100 的随机 Whole INTEGER 数字.

I was just wondering how the random number generator in C# works. I was also curious how I could make a program that generates random WHOLE INTEGER numbers from 1-100.

推荐答案

我只是想知道 C# 中的随机数生成器是如何工作的.

I was just wondering how the random number generator in C# works.

这是特定于实现的，但 伪随机数生成器的维基百科条目 应该为您提供一些想法.

That's implementation-specific, but the wikipedia entry for pseudo-random number generators should give you some ideas.

我也很好奇如何编写一个程序来生成从 1 到 100 的随机整数.

I was also curious how I could make a program that generates random WHOLE INTEGER numbers from 1-100.

您可以使用 Random.Next(int, int):

You can use Random.Next(int, int):

Random rng = new Random();
for (int i = 0; i < 10; i++)
{
    Console.WriteLine(rng.Next(1, 101));
}

请注意，上限是独有的 - 这就是我在这里使用 101 的原因.

Note that the upper bound is exclusive - which is why I've used 101 here.

您还应该了解与 Random 相关的一些陷阱" - 特别是，您应该不在每次想要生成随机数，否则如果您在短时间内生成大量随机数，您会看到很多重复.有关详细信息，请参阅我关于此主题的文章.

You should also be aware of some of the "gotchas" associated with Random - in particular, you should not create a new instance every time you want to generate a random number, as otherwise if you generate lots of random numbers in a short space of time, you'll see a lot of repeats. See my article on this topic for more details.

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