题解 | HJ13 句子逆序 java解法

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String s = in.nextLine();
        // 按空格分割
        String[] words = s.split(" ");
        StringBuilder sb = new StringBuilder();
        // 逆序拼接
        for (int i = words.length - 1; i >= 0; i--) {
            sb.append(words[i]);
            if (i > 0) {
                sb.append(" ");
            }
        }
        System.out.println(sb.toString());
    }
}