在java中制作非均匀概率分布 [英] making non-uniform probability distribution in java

问题描述

我在一个java类中总共没有元素(比如500个)，这将生成3个差异类型(类型A，类型B和类型C)的对象，概率为A=0.3，B=0.2，C=0.5.我找不到一个好的和简单的解决方案，任何人都可以帮助我提供示例代码或一些参考

i am having total no of elements(say 500) in a java class, which will generate a population of 3 diff type (type A,Type B and Type C) of objects with a probability of A=0.3,B=0.2,C=0.5. i am not able to find a nice and easy solution ,can any one help me with a sample code or some reference

提前致谢

推荐答案

对于每个元素，生成一个 0 到 9 之间的随机 int r.

For each element, generate a random int r between 0 and 9.

If 0 <= r < 3 then Type A.
If 3 <= r < 5 then Type B.
If 5 <= r < 10 then Type C.

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