题解 | #单词倒排#

import java.util.Scanner;
public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String str = sc.nextLine().replaceAll("[^A-Za-z]"," ");
        String[] arr = str.split(" ");
        for(int i=0;i<arr.length;i++){
            System.out.print(arr[arr.length-1-i]+" ");
        }
    }
}