题解 | #句子逆序#

import java.util.*;

public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String str = sc.nextLine();
        char[] ch = str.toCharArray();
        StringBuffer sb = new StringBuffer();
        String temp = "";
        for(int i = ch.length-1;i >= 0;i--){
            if(ch[i] != ' '){
                sb.append(ch[i]);
            }else{
                temp = temp+String.valueOf(sb.reverse().append(' '));
                sb.setLength(0);
            }
        }
        System.out.println(temp+sb.reverse());
    }
}