| 1234567891011121314151617181920212223 |
- package com.goafanti.common.utils;
- import java.util.Random;
- public class RandomUtil {
- public static int[]generateRandomList(int maxNum,int count){
- int[] res=new int[count];
- Random rand = new Random();//新建一个随机类
- boolean[] bool = new boolean[maxNum];
- int randInt = 0;
- for(int i = 0; i < count ; i++) {
- do {
- randInt = rand.nextInt(maxNum);//产生一个随机数
- }while(bool[randInt]);
- bool[randInt] = true;
- System.out.println(randInt);
- res[i]=randInt;
- }
- return res;
- }
- }
|