Re: Nested for loop

From:

Alex Hunsley <redlex@bluebottle.com>

Newsgroups:

comp.lang.java.help

Date:

Fri, 13 Apr 2007 12:56:25 +0100

Message-ID:

<461f6fea$0$758$5a6aecb4@news.aaisp.net.uk>

Lew wrote:

JohnT wrote:

import java.io.StringWriter;

public class ShowMe {
    public static void main(String [] args) {
        String allStars = "*****";
        int count = 0;
        for (int x=1;x<10;x++) {
            count = x;
            if (x > 5)
              count = x + (( -2 * x) + 10);
            StringWriter sb = new StringWriter(count);
            sb.write(allStars, 0, count);
            String correctNumberOfStars = sb.toString();
            System.out.println(correctNumberOfStars);
        }
    }
}

Lex pointed out to me that my expression was a bit more complex than
it needed to be, but I didn't think my effort was too bad for about 45
minutes of work. Most of that time was working out the formula. Once
I had that figured out, it wasn't too difficult to search the java
docs for a "string" type class that had a method I needed.

I was thinking of a slightly different approach (untested):

public static void main(String [] args)
{
    String allStars = "*****";
    for ( int ix = -4; ix < 5; ++ix )
    {
        System.out.println( allStars.substring( 0, 5 - Math.abs(ix) );
    }
}

This solution crossed my mind too! It's quite nice for the avoidance of
an if.
lex