1：在指定1-30數(shù)據(jù)內(nèi)，隨機(jī)獲取6個(gè)不重復(fù)的數(shù)

package org.xu.demo;

import java.util.Random;

public class RandomNumber {
    public static void main(String[] args){
        Random a=new Random();
        int s[]=new int[6];
        for (int i = 0; i < s.length;) {
            s[i]=a.nextInt(30)+1;
            if(CheckRandom(s,s[i],i)){
                System.out.println("第"+(i+1)+"個(gè)隨機(jī)數(shù)是:"+s[i]);
                i++;
            }
        }
        System.out.println(s);
    }
    public static boolean CheckRandom(int c[],int t,int l){//檢查生成的隨機(jī)數(shù)是否存在與數(shù)組中
        for (int i = 0; i < c.length; i++) {
            if(c[i]==t&&l!=i){
                return false;
            }
        }
        return true;
    }
}