要想實現隨機數和柯西隨機數，先要有任意隨機數產生，後面柯西需要。程式碼基於C++，如下：

template<typename T>
T randT(T Lower, T Upper)
{
    T temp;
    if (Lower > Upper)
    {
        temp = Upper;
        Upper = Lower;
        Lower = temp;
    }
    return (double)rand()/RAND_MAX *(Upper - Lower) + Lower;
}

正態隨機數產生，完美

double N(double
 
 mu, double sigma)
{
    int   i;
    double r, sum = 0.0;

    if (sigma <= 0.001) //強制拉回,以防止方差小於0
        sigma = 0.001;

    for (i = 1; i <= 12; i++)
        sum = sum + randT<double>(0,1);

    r = (sum - 6.00)*sigma + mu;
    return   r;
}

柯西隨機數產生，柯西隨機數也本質是兩個服從正態分佈N(0,1)產生的隨機數的比值！

double cauchy(double
 
 mu, double lamda)
{
    double u = randT<double>(0,1);
    return mu - lamda / tan(PI*u);
}