一串单词翻转——正则限制

package com.patience.interview.huawei;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.regex.Pattern;

/**
 * 一串单词翻转——正则限制
 * @author Green.Gee
 * @date 2022/7/28 11:00
 * @email green.gee.lu@gmail.com
 */
public class PatternHandleString {

    public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String str = br.readLine();
        Pattern ex = Pattern.compile("[a-zA-Z\\s']+");
        boolean f = ex.matcher(str).matches();
        if(f){
            String [] s = str.split("\\s");
            for (int i = s.length - 1;i >= 0; i--){
                System.out.print(s[i]+" ");
            }
        }
    }
}

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