鍵盤輸入三個數，實現從小到大排序

 1 import java.util.Scanner;
 2 
 3 public class Test {
 4     public static void main(String[] args) {
 5         // 創建鍵盤輸入對象
 6         Scanner input = new Scanner(System.in);
 7         
 8         // 接收用戶輸入的三個整數
 9         System.out.print("請輸入第一個整數：");
10         int num1 = input.nextInt();
11         System.out.print("請輸入第二個整數：");
12         int num2 = input.nextInt();
13         System.out.print("請輸入第三個整數：");
14         int num3 = input.nextInt();
15         
16         // 排序
17         if (num1 > num2) {
18             int temp = num1;
19             num1 = num2;
20             num2 = temp;
21         }
22         
23         if (num1 > num3) {
24             int temp = num1;
25             num1 = num3;
26             num3 = temp;
27         }
28         
29         if (num2 > num3) {
30             int temp = num2;
31             num2 = num3;
32             num3 = temp;
33         }
34         
35         // 輸出
36         System.out.println("三個整數從小到大排列：" + num1 + " " + num2 + " " + num3);
37     }
38 }