java - 从具有一定概率的字符串列表生成随机字符串

Question

我正在尝试从 java 中具有所需概率的数组字符串列表生成随机字符串。我能够生成随机字符串，但不知道如何处理概率。我必须运行程序几乎 25 - 30 次

Probability for abc is 10%
           for def  is 60%
           for ghi is  20%
           for danny is 10%

但我无法做到这一点。

 import java.util.*;

public class newyork
{
public static void main(String[]args) throws Exception
{ 
  // othr fun
    public static  void abc()
    {
    //Strings to display
        String [] random = {"abc","def", "ghi","danny"};
   //Pick one by one
        String no1= random[(int) (Math.random()*(random.length))];
        String no2 = random[(int) (Math.random()*(random.length))];
        String no3 = random[(int) (Math.random()*(random.length))];

  //print randomly generated strings
       System.out.println("Here you go : " +  no1 + " " +  no2 + " " + no3 + ");
    } 

Answer 1

伪代码:

Generate a random integer n between 0 and 9
if (n==0)        return "abc"
else if (n <= 6) return "def"
else if (n <= 8) return "ghi"
else             return "danny"

有很多方法可以做到这一点