Day2.java

package com.sbaars.adventofcode.year19.days;

import com.sbaars.adventofcode.year19.Day2019;
import com.sbaars.adventofcode.year19.intcode.IntcodeComputer;

public class Day2 extends Day2019 {
  public Day2() {
    super(2);
  }

  public static void main(String[] args) {
    new Day2().printParts();
  }

  @Override
  public Object part1() {
    return execute(12, 2);
  }

  @Override
  public Object part2() {
    return bruteForceFindingNumber(19690720, 99);
  }

  private int bruteForceFindingNumber(int number, int bound) {
    for (int i = 0; i < bound; i++) {
      for (int j = 0; j < bound; j++) {
        if (execute(i, j) == number) {
          return 100 * i + j;
        }
      }
    }
    return -1;
  }

  private long execute(int x, int y) {
    IntcodeComputer computer = new IntcodeComputer(2, x, y);
    computer.run();
    return computer.firstElement();
  }
}