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Thread: Diamond perimeter with loop

  1. #1
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    Default Diamond perimeter with loop

    Hi. I've beed trying to do this for days but I can't.



    I got the program to do the whole diamond but I don't know how to take out all the asterisk. żAny idea?

    This is my code:

    public class diamond
    {
    	public static void main(String args[])
    	{
    		int i=0,j,k,n=4;
    		for(k=1;k<=n;k++) {
    			for(i=0;i<=n-k;i++) {
    				System.out.print(" ");
    			}
    			for(j=1;j<=k;j++) {
    				System.out.print("*");
    			}
    			for(j=1;j<=k-1;j++) {
    				System.out.print("*");
    			}
    			System.out.println("");
    		}
    		for(k=1;k<=n;k++) {
    			for(i=0;i<=k;i++) {
    				System.out.print(" ");
    			}
    			for(i=1;i<=n-k;i++) {
    				System.out.print("*");
    			}
    			for(j=0;j<=n-k-2;j++) {
    				System.out.print("*");
    			}
    			System.out.print("\n");
    		}
    	}
    }


  2. #2
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    Default Re: Diamond perimeter with loop

    Apart from the first and last line, each line has: N spaces, star, M spaces, star. All you have to do is work out what N and M is for each line.
    Improving the world one idiot at a time!

  3. #3
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    Default Re: Diamond perimeter with loop

    Inside the outer loop, keep a flag, which will keep track if the very first * has been printed, don't let the program draw * again, unless it's the last index of inner loop.
    Note: Don't forget to reset the flag.

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    Default Re: Diamond perimeter with loop

    Quote Originally Posted by Mr.777 View Post
    Inside the outer loop, keep a flag, which will keep track if the very first * has been printed, don't let the program draw * again, unless it's the last index of inner loop.
    Note: Don't forget to reset the flag.
    Your refering about IF and else statement right?

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    Default Re: Diamond perimeter with loop

    yes that is what he is saying

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    Default Re: Diamond perimeter with loop

    Quote Originally Posted by Rage1337 View Post
    Your refering about IF and else statement right?
    Yes, sorry for not making it clear.
    Anyone who stops learning is old, whether at twenty or eighty. Anyone who keeps learning stays young. The greatest thing in life is to keep your mind young.

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