题解 | #整数与IP地址间的转换#

import java.util.*;

public class Main {
    public static void main(String[] args) {


        Scanner sc = new Scanner(System.in);
        String s = sc.nextLine();
        String a = sc.nextLine();

        // IP处理
        String[] arr = s.split("\\.");
        long result1 = 0;
        for (int i = 0; i < arr.length; i++) {
            result1 = result1 * 256 + Integer.parseInt(arr[i]);
        }
        System.out.println(result1);

        // 整数处理
        long ipv4 = Long.parseLong(a);
        String result2 = "";
        for (int i = 0; i < 4; i++) {
            result2 = ipv4 % 256 + "." + result2;
            ipv4 /= 256;
        }
        result2 = result2.substring(0, result2.length() - 1);
        System.out.println(result2);
    }
}