lmao

package com.company;

import jdk.nashorn.internal.runtime.ListAdapter;

import java.io.*;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.regex.Pattern;
import java.util.regex.Matcher;

public class Main {

    public static void main(String[] args) {
        /* ZAD 1
        String dna = "ACCTTGAACTCCCCC";
        String regex = "[ACTG]+";

        Pattern pattern = Pattern.compile(regex);
        Matcher matcher = pattern.matcher(dna);

        if (matcher.matches()) {
            System.out.println(matcher.group(0));
        } else System.out.println("No maches");
        */

        /*
        String dna = "ATCAACCTAC";
        String regex = "ATC([ACTG]+)(TAA|TAC|TGA)";

        Pattern pattern = Pattern.compile(regex);
        Matcher matcher = pattern.matcher(dna);

        if (matcher.matches()) {
            System.out.println(matcher.group(1));
        } else System.out.println("No matches");
        */
        String path = "./res/serverLog.txt";
        ArrayList<String> lines = new ArrayList<>();
        ArrayList<String> ips = new ArrayList<>();


        try {
            BufferedReader reader = new BufferedReader(new FileReader(path));

            String line;
            while ((line = reader.readLine()) != null) {
                lines.add(line);
            }

            String regex = "(((25[0-5])|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)";

            Pattern pattern = Pattern.compile(regex);

            for (String line_ : lines) {
                Matcher matcher = pattern.matcher(line_);

                while (matcher.find()) {
                    ips.add(matcher.group());
                }
            }

            for (String ip : ips) {
                System.out.println(ip);
            }

        }catch (Exception ex) {
            ex.printStackTrace();
        }

        ArrayList<String[]> ipArr = new ArrayList<>();
        ArrayList<Integer> ipInt = new ArrayList<>();
        for (String ip : ips) {
            ipArr.add(ip.split("\\."));
        }

        for (String[] ipss : ipArr) {
            for (String ip : ipss) {
                ipInt.add(Integer.parseInt(ip));
            }
        }

        for (Integer test : ipInt) {
            System.out.println(test);
        }

        ArrayList<String> ipv6s = new ArrayList<>();

        for (Integer ipv6 : ipInt) {
            ipv6s.add(Integer.toHexString(ipv6));
        }

        try {
            BufferedWriter writer = new BufferedWriter(new FileWriter(new File("test.txt")));
            int i = 0;

            for (String ip : ipv6s) {
                writer.write(ip);
                writer.write('\n');

            }

            writer.close();
        } catch (Exception ex) {
            ex.printStackTrace();
        }



    }
}