1 import java.util.Scanner;
2
3 /**
4 * 功能：字符串翻转，例如how are you 翻转为you are how
5 */
6 public class Main5 {
7
8 public String swap(String string) {
9
10 if (string == null) {
11 return null;
12 }
13
14 String[] strings = string.split(" ");
15
16 String temp;
17 for (int i = 0; i < strings.length / 2; i++) {
18 temp = strings[i];
19 strings[i] = strings[strings.length - 1 - i];
20 strings[strings.length - 1 - i] = temp;
21 }
22
23 StringBuilder stringBuilder = new StringBuilder();
24 for (int i = 0; i < strings.length; i++) {
25 if (i != 0) {
26 stringBuilder.append(" ");
27 }
28 stringBuilder.append(strings[i]);
29 }
30
31 return stringBuilder.toString();
32 }
33
34 public static void main(String[] args) {
35
36 Scanner scanner = new Scanner(System.in);
37 Main5 main5 = new Main5();
38
39 while (scanner.hasNextLine()) {
40 String string = scanner.nextLine();
41 System.out.println(main5.swap(string));
42 }
43 }
44 }
