import junit.framework.TestCase;

import java.io.ByteArrayOutputStream;
import java.io.PrintStream;

public class NumPatternTest extends TestCase {

    public void test0() {
        assertOutputEquals(new String[] {}, 0);
    }

    public void test1() {
        assertOutputEquals(new String[] {
                "12"},
                1);
    }

    public void test2() {
        assertOutputEquals(new String[] {
                "112",
                "233"},
                2);
    }

    public void test5() {
        assertOutputEquals(new String[] {
                "111112",
                "233333",
                "333334",
                "455555",
                "555556"},
                5);
    }

    public void test6() {
        assertOutputEquals(new String[] {
                "1111112",
                "2333333",
                "3333334",
                "4555555",
                "5555556",
                "6777777"},
                6);
    }

    public void test8() {
        assertOutputEquals(new String[] {
                "111111112",
                "233333333",
                "333333334",
                "455555555",
                "555555556",
                "677777777",
                "777777778",
                "899999999"},
                8);
    }

    private static void assertOutputEquals(final String[] expectedOutputLines, final int inputCount) {
        final PrintStream oldSystemOut = System.out;
        final ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        final PrintStream printStream = new PrintStream(byteArrayOutputStream);
        System.setOut(printStream);
        try {
            NumPattern.printNumPattern(inputCount);
        } finally {
            System.setOut(oldSystemOut);
            printStream.close();
        }

        final StringBuilder expectedOutputStringBuilder = new StringBuilder();
        for (final String line : expectedOutputLines) {
            expectedOutputStringBuilder.append(line).append(System.lineSeparator());
        }
        assertEquals(expectedOutputStringBuilder.toString(), byteArrayOutputStream.toString());
    }

}


import java.util.Scanner;

public class NumPattern {

    public static void main(String[] args) {
        Scanner scn = new Scanner(System.in);
        System.out.println("Enter number of rows:: ");
        int num = scn.nextInt();
        printNumPattern(num);
    }

    static void printNumPattern(int num) {

        // Insert your implementation here.

    }

}