题解 | #单词倒排#

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        while (in.hasNextLine()) {
            System.out.println(myAns(in.nextLine()));
        }
    }
    private static String myAns(String str) {
        //按照不是字母的字符切分字符串
        String[] split = str.split("[^A-Za-z]");
        StringBuilder strb = new StringBuilder();
        for(int i = split.length-1; i >= 0; i--) {
            strb.append(split[i]+" ");
        }
        return strb.toString().trim();
    }
}