真随机不是真正的随机我真的很困惑

Question

真随机不是真正的随机我真的很困惑

Mon*_*RPG 1 c# random

好吧,我测试了下面的方式.

生成x时间之间的随机数0~x,然后检查未生成的那些.

我认为它会非常接近100%.我的意思是0~x生成之间的所有数字.

但结果令人震惊.大约36%的数字丢失了.

我的随机功能不是真的随机吗？

在我的随机课程下面:

private static Random seedGenerator = new Random();

private static ThreadLocal<Random> random = 
    new ThreadLocal<Random>(SeededRandomFactory);

private static Random SeededRandomFactory()
{
    lock (seedGenerator)
        return new Random(seedGenerator.Next());
}

public static int GenerateRandomValueMin(int irRandValRange, int irMinValue)
{
    return random.Value.Next(irMinValue, irMinValue + irRandValRange);
}

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以下结果如下:

Between 0-10, missing numbers count: 4, percent: 40%
Between 0-100, missing numbers count: 36, percent: 36%
Between 0-1000, missing numbers count: 369, percent: 36,9%
Between 0-10000, missing numbers count: 3674, percent: 36,74%
Between 0-100000, missing numbers count: 36583, percent: 36,58%
Between 0-1000000, missing numbers count: 367900, percent: 36,79%
Between 0-10000000, missing numbers count: 3678122, percent: 36,78%
Between 0-100000000, missing numbers count: 36797477, percent: 36,8%

这里是我检查的代码:

File.WriteAllText("results.txt", "");

int irFirst = 10;

for (int i = 0; i < 8; i++)
{
    HashSet<int> hsGenerated = new HashSet<int>();

    for (int k = 0; k < irFirst; k++)
    {
        hsGenerated.Add(GenerateRandomValue.GenerateRandomValueMin(irFirst, 0));
    }

    int irNotFound = 0;
    for (int k = 0; k < irFirst; k++)
    {
        if (hsGenerated.Contains(k) == false)
            irNotFound++;
    }

    string srSonuc = 
        string.Format(
            "Between 0-{0}, missing numbers count: {1}, percent: {2}%", 
            irFirst, irNotFound,
            Math.Round((Convert.ToDouble(irNotFound)/Convert.ToDouble(irFirst))*100.0, 2).ToString()
            );

    using (StreamWriter w = File.AppendText("sonuclar.txt"))
    {
        w.WriteLine(srSonuc);
    }

    irFirst = irFirst * 10;
}

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