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();
        for(int i=0;i<str.length();i++){
            if(!Character.isLetter(str.charAt(i))){
                str=str.replace(String.valueOf(str.charAt(i))," ");
            }
        }
        String[] Arr = str.split(" ");
        for(int i=Arr.length-1;i>=0;i--){
            System.out.print(Arr[i]+" ");
        }
    }
}