A的概率为5%，A中有AA,AB,AC,概率为20%，30%，50%，B的概率为95%，B中有BA,BB,BC，概率为10%，60%，30%，写一个获得AA,AB,AC,BA,BB,BC抽奖算法

import java.util.Random;

public class LotteryAlgorithm {
    public static void main(String[] args) {
        String[] A = {"AA", "AB", "AC"};
        double[] AProbabilities = {0.2, 0.3, 0.5};
        String[] B = {"BA", "BB", "BC"};
        double[] BProbabilities = {0.1, 0.6, 0.3};

        String result = drawLottery(A, AProbabilities, B, BProbabilities);
        System.out.println("抽奖结果：" + result);
    }

    public static String drawLottery(String[] A, double[] AProbabilities, String[] B, double[] BProbabilities) {
        Random random = new Random();
        double randomValue = random.nextDouble();

        if (randomValue < 0.05) {
            int index = getRandomIndex(AProbabilities);
            return A[index];
        } else {
            int index = getRandomIndex(BProbabilities);
            return B[index];
        }
    }

    public static int getRandomIndex(double[] probabilities) {
        double randomValue = Math.random();
        double cumulativeProbability = 0.0;

        for (int i = 0; i < probabilities.length; i++) {
            cumulativeProbability += probabilities[i];
            if (randomValue <= cumulativeProbability) {
                return i;
            }
        }

        // 如果概率总和小于1，则返回最后一个元素的索引
        return probabilities.length - 1;
    }
}