Print Inverted Half Pyramid

Question

Print inverted half pyramid as shown:

1111
222
33
4

My code is:

public class HW5 {
    //5.   Print Inverted Half Pyramid.
    public static void main(String[] args) {
        int n = 4;
        for (int i = n; i >= 1; i--) {
            for (int j = 1; j <= i; j++) {
                System.out.print(i);
            }
            System.out.println();
        }
    }
}

Above code gives following output:

4444
333
22
1

How do I print the required output as shown above?

Answer 1

You need to swap the for loops. The outer loop is the number to print and the inner loop is the number of times to print it.

public class HW5 {

    public static void main(String[] args) {
        int n = 4;
        for (int j = 1; j <= n ; j++ ) {
            for (int i = n - j + 1; i >= 1; i--) {
                System.out.print(j);
            }
            System.out.println();
        }
    }
}

Above code gives following output:

1111
222
33
4