學習內容：

1.雙色球

 1 package day01;
 2 import java.util.Arrays;
 3 import java.util.Random;
 4 public class ball{
 5     public static void main(String[] args) {
 6         // TODO 自動生成的方法存根
 7         //存放1~33號數字
 8         String[]pool= {"01","02","03","04","05","06","07","08","09","10","11","12","13","14","15","16","17","18","19","20","21","22","23","24","25","26","27","28","29","30","31","32","33"};
 
 9         //存放1~33數字是否使用過
10         boolean[] used=new boolean[pool.length];
11         //存放雙色球
12         String[]balls=new String[6];
13         Random random=new Random();
14         int i;
15         int index=0;
16         while(true) {
17             //隨機生成陣列下標
18             i=random.nextInt(pool.length);
 
19             if(used[i]) {
20                 continue;//返回，重新開始迴圈
21             }
22             balls[index++]=pool[i];//取出一個球
23             used[i]=true;//標誌使用過了
24             if(index==balls.length) {//檢查是否滿了
25                 break;//結束迴圈
26             }
27         }
28         Arrays.sort(balls);
 
29         //對陣列進行擴容
30         String[]newBalls=new String[7];
31         for(int m=0;m<balls.length;m++) {
32             newBalls[m]=balls[m];
33         }
34         newBalls[newBalls.length-1]=pool[random.nextInt(16)];
35         //列印隨機生成的雙色球
36         System.out.println("雙色球："+Arrays.toString(newBalls));
37     }
38 }

2. 對以下資料使用氣泡排序、插入排序、選擇排序，進行從小到大排序：【1，5，6，9，8，2，3】