hutool工具权重随机生成

importcn.hutool.core.lang.WeightRandom;
importcn.hutool.core.util.RandomUtil;
importjava.util.ArrayList;
importjava.util.List;
publicclassTest {
publicstaticvoidmain(String[] args) {
List<WeightRandom.WeightObj<Integer>>a=newArrayList<>();
a.add(newWeightRandom.WeightObj<>(1, 20));
a.add(newWeightRandom.WeightObj<>(2,33));
a.add(newWeightRandom.WeightObj<>(3,33));
a.add(newWeightRandom.WeightObj<>(4,50));
System.out.println(RandomUtil.weightRandom(a).next());
    }
}