在Java问题中实现概率分布函数

   <groupId>org.apache.commons</groupId>

   <artifactId>commons-math3</artifactId>

   <version>3.6.1</version>

   public static void main(String[] args) {

       double mean = 0; // 正态分布的均值

       double standardDeviation = 1; // 正态分布的标准差

       NormalDistribution normalDistribution = new NormalDistribution(mean, standardDeviation);

       double x = 1.5; // 要计算概率分布函数的值

       double probability = normalDistribution.cumulativeProbability(x);

       System.out.println("概率分布函数的值：" + probability);

   }

   public static void main(String[] args) {

       double a = 0; // 均匀分布的下界

       double b = 1; // 均匀分布的上界

       double x = 0.5; // 要计算概率分布函数的值

       double probability = uniformDistribution(a, b, x);

       System.out.println("概率分布函数的值：" + probability);

   }

   public static double uniformDistribution(double a, double b, double x) {

       if (x < a || x > b) {

           return 0; // x不在[a, b]范围内，概率为0

       } else {

           return 1 / (b - a); // x在[a, b]范围内，概率为1 / (b - a)

       }

   }