Thread: ASCII Triangle

Hi,
I need to create a triangle based on a height value given by the user.
The base of the triangle is calculated with:

private int getTriangleWidth( int triangleHeight )
    {
        return 2 * triangleHeight - 1;
    }

and the method I am trying to use the make the triangle is:

private void printTriangle( int height, int margin, boolean pointUp )
    {
    	int base = this.getTriangleWidth( height );
    	int m;
    	int n;
    	int o;
 
    	if( pointUp )
    	{
 
	    	for( n = 0; n < height; n++ )
	    	{	    		
	    		for( o = -1; o < n; o++ )
	        	{
	        		System.out.print( "*" );
	        	}
	        	System.out.println( " " );
 
    		}
    	}
    }

If the user inputs 5, this results with a triangle that looks like this (I haven't included my driver method that actually tests the output):
*
**
***
****
*****

but I need an equilateral triangle: if the user inputs 5, it should have a base of 9 and a height of 5.
I understand that in my code above I don't have it depending on the base value at all but I'm not sure how to include it in or how to get the whitespace to come before the * in an even way so that I get my desired result.

Any hints would be wonderful

Hi dear I have modified your code try this. It will work now

public class Main {
    public static void main(String[] args) {
        Main obj=new Main();
        obj.printTriangle(5);
    }
    private void printTriangle(int height)
    {
    	int n;
        for( n = 0; n < height; n++ )
        {
            for(int j=height;j>n;j--)
                  System.out.print(" ");
            for(int i=0;i<=n*2;i++)
                System.out.print("*");
            System.out.print("\n");
        }
    }
}