Regarding a star pattern

Question

I am trying to print below star pattern

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

I am using below logic to print :

*
***
*****

Answer 1

It will perhaps make sense to go in as simple steps as possible.

First, you need five lines, so

for (i = 1; i <= 5; i++) {

Next, on line i, determine the number of asterisks you are going to place. It is five asterisks on line 3, two less with each step above or below that line.

    int len = 5 - Math.abs (i - 3) * 2;

Then, just place them in a single loop:

    for (j = 1; j <= len; j++)
        System.out.print("*");

And include a newline:

    System.out.println();
}