import java.io.File;
import java.io.OutputStream;
import java.io.FileOutputStream;

class Sudoku {
	public static void main(String[] args) throws Exception {
		if (args.length < 1) {
			System.out.println("Usage: java Sudoku <input> [output]");
			return;
		}

		File in = new File(args[0]);
		OutputStream out;

		if (args.length > 1) {
			File f = new File(args[1]);
			f.createNewFile();
			out = new FileOutputStream(f);
			System.out.println(args[1]);
		} else {
			out = System.out;
		}

		Brett b = new Brett(in);
		b.print();

		SudokuBeholder sb = b.los();
		System.out.println("");
		System.out.println("Fant "+sb.hentAntallLosninger()+" losninger.");

		if (args.length > 1) {
			System.out.println("Skriver til filen "+args[1]);
		}

		for (SudokuBeholder.Losning l: sb) {
			sb.print(out, l);
			out.write("\n".getBytes());
		}
		out.flush();
	}
}