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 scanner = new Scanner(System.in);
        while (scanner.hasNext()){
            String s = scanner.nextLine();
//            System.out.println(s);
            String[] split = s.split("[^a-zA-Z]+");
            if (split[0].equals("")){
                String[] scp = new String[split.length - 1];
                System.arraycopy(split,1,scp,0,split.length-1);
                split=scp;
            }
//            System.out.println(Arrays.toString(split));
//            System.out.println(split.length);
            String ss="";
            for (int i = split.length-1; i >=0; i--) {
                split[i]=split[i]+" ";
                ss=ss+split[i];
            }
            System.out.println(ss);
//            System.out.println(Arrays.toString(split));
        }
    }
}