Pattern Printing 2

1.

public class Main {
    public static void main(String[] args) {

        int num = 1;

        for (int row = 1; row <= 5; row++) {

            for (int col = 1; col <= 6 - row; col++) {
                System.out.print(num + " ");
                num++;
            }

            System.out.println();
        }
    }
}

Output
1 2 3 4 5
6 7 8 9
10 11 12
13 14
15

2.

public class Main {
    public static void main(String[] args) {

        for (int row = 1; row <= 5; row++) {

            char ch = 'A';

            for (int col = 1; col <= 6 - row; col++) {
                System.out.print(ch + " ");
                ch++;
            }

            System.out.println();
        }
    }
}

Output
A B C D E
A B C D
A B C
A B
A

3.

public class Main {
    public static void main(String[] args) {

        for (int row = 1; row <= 5; row++) {

            char ch = (char)('F' - row);

            for (int col = 1; col <= 6 - row; col++) {
                System.out.print(ch + " ");
                ch--;
            }

            System.out.println();
        }
    }
}

Output
E D C B A
D C B A
C B A
B A
A

4.

public class Main {
    public static void main(String[] args) {

        for (int row = 1; row <= 5; row++) {

            for (int col = 1; col <= 5 - row; col++) {
                System.out.print(col + " ");
            }

            System.out.print("*");
            System.out.println();
        }
    }
}

Output
1 2 3 4 *
1 2 3 *
1 2 *
1 *
*

5.