题解 | #句子逆序#

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNextLine()) {
            System.out.println(myAns(in.nextLine()));
        }
    }
    
    private static String myAns(String str) {
        String [] strs = str.split(" ");
        StringBuilder sb = new StringBuilder();
        for (int i = strs.length - 1; i >= 0; i--) {
            if (i == 0) {
                sb.append(strs[i]);
                break;
            }
            sb.append(strs[i] + " ");
        }
        return sb.toString();
    }
}