题解 | #单词倒排#

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[] split = in.nextLine().split("[^a-zA-Z]");
        StringBuilder sb = new StringBuilder();
        for (int i = split.length - 1; i >= 0; i--) {
            if (split[i].equals("")) {
                continue;
            }
            sb.append(split[i]).append(" ");
        }
        System.out.println(sb);
    }
}