package com.company;


import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.Arrays;
import java.util.Calendar;



public class Main {
    private static char[] word;

    public static void main(String[] args) {


        load("slowo2.txt");


        long start_time = Calendar.getInstance().getTimeInMillis();

        int found = 0;
        for (int i = 1; i < word.length / 2 + 1; i++) {
            if (Arrays.equals(word, 0, i - 1, word, i, i + i - 1)) found = i;
            //if (isEqual(i)) found = i;
        }

        long stop_time = Calendar.getInstance().getTimeInMillis();
        System.out.println("Found: " + (found * 2) + " in " + (stop_time - start_time)/1000 + " s.");
    }


//    public static boolean isEqual(int to) {
//
//        for (int i = 0; i < to; i++) {
//            if (word[i] != word[i + to]) {
//                return false;
//            }
//        }
//
//        return true;
//    }

    private static void load(String path) {
        File file = new File(path);
        word = new char[(int) file.length()];
        try (BufferedReader reader = new BufferedReader(new FileReader(path))) {
            reader.read(word);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}