题解 | #单词倒排#

import java.util.*;

public class Main{
    public static void main(String[] args){
        Scanner in = new Scanner(System.in);
        String str = in.nextLine();
        String[] strs = str.split("[^a-z|^A-Z]");
        for(int i = (strs.length - 1); i >= 0; i--){
            if(!strs[i].equals("")){
                System.out.print(strs[i] + " ");
            }    
        }
     }
}