switch實現135學習，246複習，週日休息

程式碼如下:

 1 package com.kk;
 2 
 3 import java.util.Scanner;
 4 
 5 public class Xuexi03 {
 6     public static void main(String[] args) {
 7         int week=0;
 8         Scanner sc=new Scanner(System.in);
 9         
10         do {
11             System.out.println("請輸入星期幾(1-7):");
 
12             week=sc.nextInt();
13         }while(week<1||week>7);
14             switch (week) {
15             case 1:
16             case 3:
17             case 5:
18                 System.out.println("今天要學習");
19                 break;
20             case 2:
21             case 4:
22             case
 
 6:
23                 System.out.println("今天要複習");
24                 break;
25             case 7: 
26                 System.out.println("週日休息");
27                 break;
28             }        
29     }
30 }

結果如下:

小遊戲:

 1 package com.kk;
 2 
 3 import
 
 java.util.Scanner;
 4 
 5 public class Suiji0000 {
 6     public static void main(String[] args) {
 7         Scanner sc=new Scanner(System.in);
 8         int money=1000;
 9         System.out.println("--------歡迎來到BD22大賭場-------------");
10         
11         while(true) {
12             System.out.println("是否開始遊戲(y/n)?");
13             String choose=sc.next();
14             if(!"n".equals(choose)) {
15                 int a=(int)(Math.random()*6)+1;
16                 int b=(int)(Math.random()*6)+1;
17                 int c=(int)(Math.random()*6)+1;
18                 //3-9為小,10-18為大
19                 String result=a+b+c>=10?"大":"小";
20                 
21                 System.out.println("請輸入下注金額:");
22                 int pay=sc.nextInt();
23                 System.out.println("請壓大壓小:");
24                 String guess=sc.next();
25                 
26                 System.out.println("買定離手:"+a+","+b+","+c+"-----"+result);
27                 if(guess.equals(result)) {
28                     System.out.println("恭喜你壓中");
29                     money+=pay;
30                 }else {
31                     System.out.println("未中獎");
32                     money-=pay;
33                 }
34                 System.out.println("當前餘額:"+money);
35             }else {
36                 System.out.println("謝謝");
37                 break;
38             }
39         }
40         System.out.println("遊戲結束");
41     }
42 }

效果如下: