轮盘赌介绍

算法实现

package test;public class Test {public static double[] multiPros;public static void main(String[] args) {multiPros = new double[4];multiPros[0] = 0.14;multiPros[1] = 0.49;multiPros[2] = 0.06;multiPros[3] = 0.31;for (int i = 0; i < 10; i++) {int k = nextDiscrete(multiPros);System.out.println(k);}}public static int nextDiscrete(double[] probs){double sum = 0.0;for (int i = 0; i < probs.length; i++)sum += probs[i];double r = Math.random()  * sum;sum = 0.0;for (int i = 0; i < probs.length; i++) {sum += probs[i];if (sum > r)return i;}return probs.length - 1;}
}

结果展示