AdventOfCode2017/Day11

Day11Part1.java

public static void main(String[] args) throws IOException {

		List<String> bloccs = Files.readAllLines(Paths.get(new File("res/day11").getPath())).stream()
				.collect(Collectors.toList());

		String s1 = bloccs.get(0).trim();

		int x = 0, y = 0, distance = 0, goal = 0;

		for (String s : s1.split(",")) {
			Hexagons hex = Hexagons.valueOf(s.toUpperCase());

			x += hex.getX();
			y += hex.getY();
			distance = Hexagons.distanceAsHexagon(x, y);
			if(distance > goal) goal = distance;

		}

		System.out.println(distance);
		
		
	}

Day11Part2.java

public static void main(String[] args) throws IOException {

		List<String> bloccs = Files.readAllLines(Paths.get(new File("res/day11").getPath())).stream()
				.collect(Collectors.toList());

		String s1 = bloccs.get(0).trim();

		int x = 0, y = 0, distance = 0, goal = 0;

		for (String s : s1.split(",")) {
			Hexagons hex = Hexagons.valueOf(s.toUpperCase());

			x += hex.getX();
			y += hex.getY();
			distance = Hexagons.distanceAsHexagon(x, y);
			if(distance > goal) goal = distance;

		}

		System.out.println(goal);
		
		
	}

Hexagons.java

import static java.lang.Math.*;

public enum Hexagons {

	S(0, 1), N(0, -1), SE(1, 0), SW(-1, 1), NE(1, -1), NW(-1, 0);

	private int x, y;

	Hexagons(int x, int y) {
		this.x = x;
		this.y = y;
	}

	public int getX() {
		return x;
	}

	public int getY() {
		return y;
	}

	public static int distanceAsHexagon(int x, int y) {
		return (abs(x) + abs(y) + abs(x + y)) / 2;
	}

}