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Thread: Invert an integer Triangle?

  1. #1
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    Default Invert an integer Triangle?

    Hi all,

    I'm finding it difficult to get my head around the concept, but i managed to construct this for a section of my weekly assignment.

    class Q4d
    {
    public static void main (String [] args)
    	{
    	int numberOfLines = 6;
    	// Pattern D
    	System.out.println();
    	System.out.println("Pattern D");
    	//Getting correct number of rows
    	for (int lines = 1; lines <= numberOfLines; lines++)
    		{
    		//getting correct number of columns
    		for (int columns = 1; columns <= numberOfLines - lines; columns++) 
    			{
    			System.out.print("  ");
    			}
    		//getting figures
    		for (int number = 1; number <= lines; number++)
    			{
    			System.out.print(number + " ");
    			}
    		System.out.println();
    		}
    	}
    }
     
    Output = 
     
    Pattern D
    * * * * * 1 
    * * * * 1 2 
    * * * 1 2 3 
    * * 1 2 3 4 
    * 1 2 3 4 5 
    1 2 3 4 5 6




    The next question is asking me to present the same thing, only upside down.

    I'm not sure on how to do this.

    Any pointers in the right direction?


  2. #2
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    Default Re: Invert an integer Triangle?

    So it should look like this?:
    1 2 3 4 5 6
      1 2 3 4 5
        1 2 3 4
          1 2 3
            1 2
              1
    (That was hard to do.)

    You can certainly print the first line. What has to happen after that?

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