uni/inf1010/hw10/SudokuBeholder.java

import java.util.List;
import java.util.ArrayList;
import java.util.Iterator;
import java.io.OutputStream;

class SudokuBeholder implements Iterable<SudokuBeholder.Losning> {
	public static class Losning implements Iterable<Losning.Verdi> {
		public static class Verdi {
			int tall;
			boolean original;

			Verdi(int tall, boolean original) {
				this.tall = tall;
				this.original = original;
			}
		}

		List<Verdi> verdier = new ArrayList<>();

		public void leggTil(int n, boolean original) {
			verdier.add(new Verdi(n, original));
		}

		public Iterator iterator() {
			return verdier.iterator();
		}
	}

	private List<Losning> losninger = new ArrayList<>();
	private int antallLosninger = 0;
	private Brett brett;

	private final String colOriginal = (char)27 + "[31;1m";
	private final String colReset = (char)27 + "[0m";

	SudokuBeholder(Brett brett) {
		this.brett = brett;
	}

	public void leggTil(Losning losning) {
		if (antallLosninger < 2500) {
			losninger.add(losning);
		}
		antallLosninger += 1;
	}

	public int hentAntallLosninger() {
		return antallLosninger;
	}

	public Losning hent(int i) {
		return losninger.get(i);
	}

	public Iterator iterator() {
		return losninger.iterator();
	}

	public void print(OutputStream out, Losning losning) throws Exception {
		int x = 0;
		int y = 1;
		int modX = brett.storrelse / brett.antallBokserX;
		int modY = brett.storrelse / brett.antallBokserY;

		int idx = 0;
		for (Losning.Verdi verdi: losning) {
			if (x % modX == 0 && x != 0) {
				out.write("|".getBytes());
			}

			String str;
			if (verdi.original && out == System.out) {
				str = colOriginal+brett.toChar(verdi.tall)+colReset;
			} else {
				str = ""+brett.toChar(verdi.tall);
			}
			out.write(str.getBytes());

			x += 1;
			if (x >= brett.storrelse) {
				x = 0;

				if (y % modY == 0 && y < brett.storrelse) {
					out.write("\n".getBytes());
					for (int i = 0; i < brett.storrelse; ++i) {
						if (i %  modX == 0 && i != 0) {
							out.write("+".getBytes());
						}
						out.write("-".getBytes());
					}
				}
				out.write("\n".getBytes());
				y += 1;
			}
			idx += 1;
		}
	}
}