随机数生成问题 [英] Random Number generation Problem

问题描述

任何人都可以告诉我如何生成随机数，这样在每次执行时它都不应该生成相同的数字或相同的数字。

Hi,

Can anyone tell me how to generate random numbers so that on every execution it should not generate identical numbers or same numbers.

推荐答案

随机数从种子值开始：通常是系统时钟。所以，只要你不同时启动随机数生成器，你应该做什么并不重要！



在C＃中，它很简单：a Random类的类级别（甚至可能是 static ）实例：

Random numbers are started from a seed value: normally the system clock. So it shouldn't matter what you do as long as you don't start the random number generator at the same time!

In C#, it's pretty easy: a class level (possibly even static) instance of the Random class:

private Random rand = new Random();

然后用它来生成你的你想要的数字：

Then use it to generate your numbers when you want:

for (int i = 0; i < 100; i++)
   {
   int r = rand.Next();
   Console.WriteLine(r);
   }

应该证明每次执行代码的顺序都不同。



如果你想要一个唯一的编号执行，然后我建议使用Guid：

Should prove the sequence is different for each execution of your code.

If you want a single unique number for each execution, then Id suggest using a Guid instead:

Guid id = Guid.NewGuid();

因为这些非常非常不太可能复制。

as these are very, very unlikely to be duplicated.

只需使用.NET中的Random类

确保在每个会话中使用不同的种子。



http://msdn.microsoft。 com / en-us / library / ctssatww（v = vs.110）.aspx [ ^ ]



使用相同的种子将导致随机生成器class再次创建相同的序列。

Just use the Random class in .NET
make sure you use a different "seed" on each session.

http://msdn.microsoft.com/en-us/library/ctssatww(v=vs.110).aspx[^]

using the same "seed" will cause the Random generator class to create the same sequence again.

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