Help with program

sallyk57

How would I make a java program using for loops to print the following pattern...

*
***
*****
*******
*********
*******
*****
***
*

i started it but dont know what to do...

public class Stars
{
public static void main (String []args)
{
final int MAX_ROWS=10;
for (int row=1; row<=MAX_ROWS; row++)
{

.....

r035198x

Quote:

Originally Posted by sallyk57

How would I make a java program using for loops to print the following pattern...

*
***
*****
*******
*********
*******
*****
***
*

i started it but dont know what to do...

public class Stars
{
public static void main (String []args)
{
final int MAX_ROWS=10;
for (int row=1; row<=MAX_ROWS; row++)
{

.....

Never under-estimate the power of the "growing phase-shrinking phase approach"

Expand|Select|Wrap|Line Numbers

 public class Stars {

    public static void main (String []args) {

        final int MAX_ROWS = 9;

        int n = 6;

        String stars = "*";

        for (int row=0; row < MAX_ROWS; row++) {

            for(int i = 0; i < n;i++) {

                System.out.print(" ");

            }

            System.out.println(stars);
 
            if(row >= 4) {

                if(stars.length() == 1) {

                    break;

                }

                n++;

                if(row == 9) {
 
                }

                else {

                    stars = stars.substring(0, stars.length()-2);
 
                }

            }

            else {

                n--;

                stars = stars + "**";

            }

        System.out.println();

        }

    }

}

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