使用Java语言程序模拟彩票抽奖系统。

                int a[]=new int[6];
        Random ra=new Random();
                //获取6个1-33之间的随机数
        for (int i = 0; i < a.length; i++) {
            a[i]=ra.nextInt(33)+1;
        }
                //获取一个1-16的随机数
        int b=ra.nextInt(16)+1;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Random;

public class Dr {
    private int lastNum;
    private Random random = new Random();
    private List<Integer> list = new ArrayList<Integer>();
    private List<Integer> numList = new ArrayList<Integer>();
   
    public Dr(){
        init();
    }
   
   
    private void init(){
        list.clear();
        numList.clear();
      
        for(int i = 1; i<=33; i++){
            list.add(i);
        }
    }
   
    public void generateNum(){
        for(int i =0; i<6; i++){
            numList.add(list.remove(random.nextInt(list.size())));
        }
    }
   
    public void generateLastNum(){
        int index = getLastNumMaxIndex();
        lastNum = list.remove(random.nextInt(index));
    }
   
    private int getLastNumMaxIndex(){
        Collections.sort(list);
        for(int i =0; i<list.size(); i++){
            if(list.get(i)>16)
                return i-1;
        }
        return -1;
    }
   
    public void printRandomNums(){
        Collections.sort(numList);
        for(int i = 0;i<6;i++){
            System.out.print(numList.get(i) + " ");
        }
        System.out.println(lastNum + " ");
    }
   
    public static void main(String[] args) {
        Dr d = new Dr();
        d.generateNum();
        d.generateLastNum();
        d.printRandomNums();
    }
}

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Random;

public class Dr {
    private int lastNum;
    private Random random = new Random();
    private List<Integer> list = new ArrayList<Integer>();
    private List<Integer> numList = new ArrayList<Integer>();
   
    public Dr(){
        init();
    }
   
   
    private void init(){
        list.clear();
        numList.clear();
      
        for(int i = 1; i<=33; i++){
            list.add(i);
        }
    }
   
    public void generateNum(){
        for(int i =0; i<6; i++){
            numList.add(list.remove(random.nextInt(list.size())));
        }
    }
   
    public void generateLastNum(){
        int index = getLastNumMaxIndex();
        lastNum = list.remove(random.nextInt(index));
    }
   
    private int getLastNumMaxIndex(){
        Collections.sort(list);
        for(int i =0; i<list.size(); i++){
            if(list.get(i)>16)
                return i-1;
        }
        return -1;
    }
   
    public void printRandomNums(){
        Collections.sort(numList);
        for(int i = 0;i<6;i++){
            System.out.printf("%3d", numList.get(i));
        }
        System.out.printf("%3d\n",lastNum);
    }
   
    public void generateRandomNums(int n){
        for(int i =0; i<n; i++){
            init();
            generateNum();
            generateLastNum();
            printRandomNums();
        }
    }
   
    public static void main(String[] args) {
        Dr d = new Dr();
        d.generateNum();
        d.generateLastNum();
        d.printRandomNums();
      
        d.generateRandomNums(8);
    }
}