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(); boolean flag = false; int randInt = 0; for (int i = 0; i < count; i++) { do { randInt = rand.nextInt(maxNum); for (int i1 = 0; i1 < count; i1++) { if (res[i1] == randInt) { flag = false; break; } flag=true; } } while (!flag); flag = false; res[i] = randInt; } return res; } }