Hourglass using recursion

**nweid1** · 05-01-2012, 11:33 PM

I have to write a recursive program that makes an hourglass that suites the size of the user's input. For example, if the user types 4, this should print:

Java Code:

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

and so far I got this far:

Java Code:

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

so I just need to figure out how to get the spaces but I'm not sure how to do this. Thanks for the help.

Java Code:

import java.util.InputMismatchException;
import java.util.Scanner;

public class Hourglass {

	public static void main(String[] args) {

		Scanner console = new Scanner(System.in);
		System.out.println("Enter an integer greater than or equal to 1");
		int n = 0;
		try {
			n = console.nextInt();
		} catch (InputMismatchException e) {
			e.getMessage();
		}
		if (n < 1) {
			System.out.println("Invalid input");
		} else {
			System.out.println("");
			hourglass(n, 0);
			System.out.println("");
		}

	}

	public static void hourglass(int n, int count) {
		recursion(n, count);
		if(n > 1) {
			hourglass(n-1, count);
			recursion(n, count);
		}
	}

	public static void recursion(int n, int count) {
		System.out.print("* ");
		if (n > 1)
			recursion(n - 1, count);
		else
			System.out.println();
	}
}

**doWhile** · 05-02-2012, 01:56 AM

Cross posted at Hourglass using recursion

**nweid1** · 05-02-2012, 04:15 AM

Hey, thanks for wasting your time and my time by posting "cross posted" but not helping with either of the posts.

**DarrylBurke** · 05-02-2012, 05:30 AM

One more: Hourglass Using Recursion - Java | Dream.In.Code

Cross posters don't deserve help.

db

**nweid1** · 05-02-2012, 05:32 AM

Cross posters don't deserve help? What are you, 5 years old? Grow up and find something better to do than patrolling programming forums lol

**DarrylBurke** · 05-02-2012, 05:33 AM

Originally Posted by nweid1

Cross posters don't deserve help? What are you, 5 years old? Grow up and find something better to do than patrolling programming forums lol

Ah, the misbegotten sense of entitlement of the least worthy!

/yawns

db

**nweid1** · 05-02-2012, 05:37 AM

/yawns? Come on man you must still be living in your mom's basement. I'm still confused as to why you're on this post if you're just going to act like a kid.

**DarrylBurke** · 05-02-2012, 05:44 AM

Originally Posted by nweid1

/yawns? Come on man you must still be living in your mom's basement. I'm still confused as to why you're on this post if you're just going to act like a kid.

Carry on wasting time antagonizing the very people who might have helped you, all the way to your failed grade.

db

**doWhile** · 05-02-2012, 05:50 AM

Originally Posted by nweid1

Hey, thanks for wasting your time and my time by posting "cross posted" but not helping with either of the posts.

I do recommend you read the links provided to you on other forums, in particular the following:
The problems with cross-posting
We do feel like our time is wasted, not for posting crosspost notices, but for replying to a post that has been answered and/or discussed elsewhere that is not disclosed.

Cross posting is not against forum rules, but it has to do with respect. Presuming you are a reasonable person: you ask for help from unpaid volunteers - you should respect those that are trying to help. Otherwise, we all loose respect for you and your chances of receiving help - here or elsewhere now and in the future, go to 0.

**nweid1** · 05-02-2012, 07:07 AM

The fact that you are limiting another person's knowledge on a subject because of the crime of cross-posting just makes you out to be a...jerk. Sorry if "jerk" seems kiddish but I wouldn't want to get reported to the programming police for saying something vulgar.

**nweid1** · 05-02-2012, 07:09 AM

Originally Posted by doWhile

I do recommend you read the links provided to you on other forums, in particular the following:
The problems with cross-posting
We do feel like our time is wasted, not for posting crosspost notices, but for replying to a post that has been answered and/or discussed elsewhere that is not disclosed.

Cross posting is not against forum rules, but it has to do with respect. Presuming you are a reasonable person: you ask for help from unpaid volunteers - you should respect those that are trying to help. Otherwise, we all loose respect for you and your chances of receiving help - here or elsewhere now and in the future, go to 0.

Advice taken. From now on I'll take note to it but seeing as though I rarely use this forum I didn't know it was such a huge deal to widen my range of advisers. But I must say though that yet again I have a comment and yet no help. Thank you.