While loop triangle problem

[cmb3587]

My task is to take a user input that ranges from 1-50 and use it to create a triangle of asterisks. I.E:

Enter number: 5

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

I know that i need 2 seperate embedded while loops and that the first one creates a row of asterisks equal to the row number until you reach the input and the second subtracts 1 asterisk until you reach 0.

I can not figure out what is wrong with my code to do this...can someone help please.

import java.util.Scanner;

public class triangle {

	public static void main(String[] args) {
		Scanner kbd = new Scanner(System.in);
		String asterisk;
		System.out.print("Enter a triangle size (between 1 and 50): ");
		int number = kbd.nextInt();
		asterisk = "*";
		int length = asterisk.length();
		int lines = 0;
		while (lines <= number){
			System.out.println(asterisk);
			lines++;
			while (length <= number) {
				System.out.print(asterisk);
				length++;
			}
		}
		while (lines > 0 ) {
			System.out.println(asterisk);
			lines--;
			while (length <= number) {
				System.out.print(asterisk);
				length++;
			}
		}

		
	}
}

[azzaiel]

what is the difference of inputs from 1 - 50?

[azzaiel]

correct me if im wrong

input: 3

*
**
***
**
*

input 2

*
**
*

input 4

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

[azzaiel]

:) try this

public static void main(String[] args) {
		Scanner kbd = new Scanner(System.in);
		final String ASTRTISK = "*";
		System.out.print("Enter a triangle size (between 1 and 50): ");
		int number = kbd.nextInt();
		int lines = 1;
		final int lenght = (number * 2) - 1;
		int loops = 1;
		
		while (lines <= lenght) {
	
			for (int index = loops; index > 0; index--) {
				System.out.print(ASTRTISK);
			}
			System.out.println("");
			
			if (lines >= number ) {
				loops -= 1;
			} else {
				loops += 1;
			}
			
			lines += 1;	
		}

	}

[CJSLMAN]

azziel... I know you mean good, but it's not a good idea to give complete working code to the OPs'... too much temptation to cut & paste & forget. There's no learning process. It would be much better to give hints, links, pseudo code, explanations, exples and code snippets.

Thanks,
CJSL