package src;

import java.io.FileReader;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class Day03 {
    public static void main(String[] args) {
        part1();
        part2();
    }

    private static void part1() {
        try (Scanner scanner = new Scanner(new FileReader("resources/inputs/03/input"))) {
            int sum = 0;
            while (scanner.hasNextLine()) {
                String raw = scanner.nextLine();
                List<String> bank = List.of(raw.split(""));
                int a = 0;
                int b = 1;
                int curr = Integer.parseInt(bank.get(a) + bank.get(b));
                for (int i = 2; i < bank.size(); i++) {
                    int candidateA = Integer.parseInt(bank.get(a) + bank.get(i));
                    int candidateB = Integer.parseInt(bank.get(b) + bank.get(i));
                    if (candidateA > curr) {
                        curr = candidateA;
                        b = i;
                    }
                    if (candidateB > curr) {
                        curr = candidateB;
                        a = b;
                        b = i;
                    }
                }
                sum += curr;
            }
            IO.println(sum);
        } catch (Exception e) {
            IO.println(e.getMessage());
        }
    }

    private static void part2() {
        try (Scanner scanner = new Scanner(new FileReader("resources/inputs/03/testinput"))) {
            long sum = 0L;
            while (scanner.hasNextLine()) {
                String raw = scanner.nextLine();
                List<String> bank = List.of(raw.split(""));
                // first, get the initial 12 batteries
                List<String> curr = new ArrayList<>();
                curr.addAll(bank.subList(0, 12));
                for (int i = 12; i < bank.size(); i++) {
                    curr.add(bank.get(i)); // add the next battery to the end of the list
                    for (int j = 1; j < 10; j++) {
                        // does the list contain a battery of the specified value?
                        int index = curr.indexOf(String.valueOf(j));
                        if (index != -1) {
                            curr.remove(index); // remove it if it does
                            break;
                        }
                    }
                }
                String result = curr.stream().reduce("", String::concat);
                IO.println(raw + " " + result);
                sum += Long.parseLong(result);
            }
            IO.println(sum);
        } catch (Exception e) {
            IO.println(e.getMessage());
        }
    }
}