for loop problem. any suggestions?

[basla]

I actually did figure it out on my own before his response, but I really appreciate his help. It was good to look and see the solution he came up with vs what I did and realize there are many ways to solve it.

I do actually like it though that you all don't typically spoon feed answers. I know I learn better when I have to figure it out. Some guidance is much appreciated though.

In short, thanks again to all!

Here's what I came up with for my code. It has a ton of documentation notes to myself explaining what I'm doing, so sorry if that makes it hard to read:

 

public class TrianglePrinting //name of program
{
	//Main method begins execution of Java program
	public static void main(String[] args) 
	{ 
		//first triangle         
	 	for(int i=1; i<=10; i++)/*declare and initialze control 
		variable; set loop continuation condition; increment control 
		variable by 1*/ 
			  {
			  	for(int j=1; j<=i; j++)/*declare and initialze control 
				variable; set loop continuation condition; increment 
				control variable by 1*/
				System.out.print("*");//display * to screen
    			System.out.println(" ");//display white space to screen		
				}//end for loop
		System.out.println("\n");//print new line

		//second triangle
		for(int i=10; i>=0; i--)/*declare and initialze control 
		variable; set loop continuation condition; decrement control 
		variable by 1*/
				{
				for(int j=1; j<=i; j++)/*declare and initialze control 
				variable; set loop continuation condition; increment 
				control variable by 1*/
				System.out.print("*");//display * to screen
				System.out.println(" ");//display white space to screen	
				}
		//end for loop
		System.out.println("\n");//print new line
	
		//third triangle
		int nLines = 10;//declare and initialize nLines

		for (int i = 1; i <= nLines; i++)/*declare and initialize 
		control variable; set loop continuation condition; Increment 
		control variable by 1.*/
			{
			int nSpaces = i - 1;/*initiate nSpaces to one less than the 
			numberof lines*/
			int nStars = (nLines - i) + 1;/*initiate asterisks to the 
			number of lines*/

				for (int j = 1; j <= nSpaces; j++)/*declare and initialze 
				control variable; set loop continuation condition; increment 
				control variable by 1*/
				System.out.print(" ");//display white space to screen
					
					for (int j = 1; j <= nStars; j++)/*declare and initialze 
					control variable; set loop continuation condition; 
					increment control variable by 1*/
					System.out.print("*");//display * to screen
					System.out.println("");//display white space to screen
			}//end for loop
			System.out.println(" \n");//print new line
			
		//fourth triangle 
		for (int i = 1; i <= nLines; i++)/*declare and initialize control 
		variable; set loop continuation condition; Increment control 
		variable by 1.*/
			{
			int nSpaces = (nLines - i) + 1;/*declare and initialize nSpaces 
			to one less than the numberof lines*/
			int nStars = i - 1;//initiate asterisks to the number of lines

			for (int j = 1; j <= nSpaces; j++)/*declare and initialze control 
			variable; set loop continuation condition; increment control 
			variable by 1*/
			System.out.print(" ");//display white space to screen
				
				for (int j = 1; j <= nStars; j++)/*declare and initialze 
				control variable; set loop continuation condition; increment 
				control variable by 1*/
				System.out.print("*");//display * to screen
			
				System.out.println("");//display white space to screen
			}//end for loop
			
	}//End main method			
}//End class

----jGRASP exec: java TrianglePrinting
*
**
***
****
*****
******
*******
********
*********
**********


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

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



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

[sunde887]

I am glad you solved it. There will always be more than one way to solve anything. If you wanted you could probably do this in much more complicated ways. The more you work with it, the easier the logic will become. If you get really stuck, come here and ask for help as a last resort. This is how I have been learning java. TBH, I didn't even know how to declare arrays in the beginning of January.

If you are satisfied with the help you have received here, please mark the thread solved with the thread tools at the top.

[basla]

Thanks for the encouragement, Sunde887!