Multiplication Array table

Question

I need to get this result : input I wanted to have

I am very close but the final step is killing me:

public static void printMultiplicationTable(int size) {
    System.out.print("\t");
    for (int i = 0; i <= size; i++) {
        for (int j = 0; j <= size; j++) {
            if (j == 0) System.out.print( i );
            else if (i == 0) System.out.print("\t" + j);
            else System.out.print("\t" + i * j);
        }
        System.out.println();
    }
}

How do I get empty space at first line and start from 1 instead of 0 ?

Answer 1

You were indeed close. your first System.out.print("\t"); was causing extra tab. Also, I have added the output for the condition when i==0 && j==0. Given below is the program that prints the desired result:

public class TestMyClass {
    public static void main(String[] args) {
        printMultiplicationTable(4);
    }

    public static void printMultiplicationTable(int size) {
        for (int i = 0; i <= size; i++) {
            for (int j = 0; j <= size; j++) {
                if (i==0 && j==0)
                    System.out.print("");
                else if (j == 0)
                    System.out.print(i);
                else if (i == 0)
                    System.out.print("\t" + j);
                else
                    System.out.print("\t" + i * j);
            }
            System.out.println();
        }
    }
}

Output:

    1   2   3   4
1   1   2   3   4
2   2   4   6   8
3   3   6   9   12
4   4   8   12  16