纯暴力解法
import java.util.*;
public class ExchangeMoney {public static void main(String[] args) {Scanner scanner new Scanner(System.in);while(scanner.hasNextLine()){int count Integer.parseInt(scanner.nextLine());List<String> strings new ArrayLi…
一、Centos安装Certbot客户端
yum install certbot
二、生成证书
certbot certonly --standalone -d 你的域名
执行该命令后会生成如下文件
privkey.pem : the private key for your certificate.
fullchain.pem: the certificate file used in most server software.
c…