题解 | 句子逆序

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        while (in.hasNextLine()) { 
           String str = in.nextLine();
		  //空格分隔获取单词数组
           String[] strArr = str.split(" ");
           StringBuilder sb = new StringBuilder();
		  //倒序插入
           for(int i = strArr.length-1;i>=0;i--){
                sb.append(strArr[i]+" ");
           }
		  //去除最后的空格
           sb.deleteCharAt(sb.length()-1);
           System.out.println(sb.toString());
        }
    }
}