import java.text.NumberFormat;
import java.util.Arrays;

class Test {
	public static String toTableString(int data[][]) {
		int max = 0;
		for (int i = 0; i < data.length; i++)
			for (int is : data[i])
				if (max < is)
					max = is;

		return toTableString(data, Integer.toString(max).length());
	}

	public static String toTableString(int data[][], int nrLen) {
		StringBuilder sb = new StringBuilder();
		int max = 0;
		NumberFormat nf = NumberFormat.getIntegerInstance();
		nf.setMaximumIntegerDigits(nrLen);
		nf.setMinimumIntegerDigits(nrLen);
		nf.setGroupingUsed(false);

		for (int i = 0; i < data.length; i++)
			if (max < data[i].length)
				max = data[i].length;

		char line[] = new char[(1 + nf.format(0).length()) * (1 + max)];
		Arrays.fill(line, '—');

		sb.append(nf.format(0).replace("0", " ")).append('|').append(' ');
		for (int i = 0; i < max; i++)
			sb.append(nf.format(i)).append(' ');

		sb.append("\n").append(line);
		for (int i = 0; i < data.length; i++) {
			sb.append("\n").append(nf.format(i)).append('|').append(' ');
			for (int c : data[i])
				sb.append(nf.format(c)).append(' ');
		}

		return sb.toString();
	}

	public static void main(String[] args) {
		System.out.println(toTableString(new int[][] { { 1, 2, 3, 4, 5, 6 },
				{ 2, 3, 4, 5, 6, 1 }, { 3, 4, 5, 6, 1, 2 },
				{ 4, 5, 6, 1, 2, 3 }, { 5, 6, 1, 2, 3, 4 },
				{ 6, 1, 2, 3, 4, 5 } }));
		System.out.println();
		System.out.println(toTableString(new int[][] { { 1 }, { 2, 3 },
				{ 3, 4, 5 }, { 4, 5, 6, 1 }, { 5, 6, 1, 2, 3 },
				{ 6, 1, 2, 3, 4, 5 } }));
		System.out.println();
		System.out.println(toTableString(new int[][] { { 1 }, { 20, 300 },
				{ 3000, 40000, 50000 }}));
	}

}