Thread: Need Hint for Triangle???

Hi,

I need to build the triangle like below.Please give hint to solve this using loops.

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

thanks in advance.

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Originally Posted by Ganeprog

I tried but i dont know how to start this. give some hint or idea to solve this above triangle or Please provide some initiation point to start

First, I imagine you want (or you have been asked to do) to have a variable that contains the "height" of the triangle, e.g.:

int height = 5;

And given only this value, generate dynamically the triangle, so that changing this value you get another correct triangle.

You need a main loop (for) cycle for each row, I think this is quite trivial. For each row you need to do another loop, some prints but also few calculations.
If you want to have a fixed number of spaces at the beginning of each line, it's ok, it's a simple fixed println. Then you need a number of spaces that depends on the current row. On the first row, how many spaces do you need before the single "*" in order to have this centered?
And you need a space between two consecutive "*".

So please, start from these considerations.

public class MyTriangle{
    public static void main(String args[]){
        MyTrinagle mt = new MyTriangle();
        // up to you ....
    }
}