题解 | #单词倒排#

import java.util.*;

public class Main{

public static void main(String[] args){
     Scanner s = new Scanner(System.in);
    String line =s.nextLine();
    
    char[] chars =line.toCharArray();
    for (int i =0;i<chars.length;i++){
        char c = chars[i];
        if (c>'z' || c<'A' || (c>'Z' && c<'a')){
            chars[i]=' ';
        }
    }
   line=new String(chars);
    String[] arr = line.split(" ");
    for(int i =arr.length-1;i>=0;i--){
        System.out.print(arr[i]+" ");
    }
    System.out.println();
}

}