Solved

Another incrementing problem

Posted on 2004-09-08
15
237 Views
Last Modified: 2006-11-17
Well guys I have another incrementing problem for you...this time it's a little more difficult but still pretty basic.   This problem gives me 6 canditates/bits of code to fill in for a single line and 6 outputs.  In this book I'm supposed to match the bit of code to one of the outputs.  

Canditates:               Correct Outputs:
x = x + 3;                      54 6
x = x + 6;                      60 10
x = x + 2;                      45 6
x++;                             36 6
x--:                               18 6
x = x + 0;                      6 14

Now the Code:
class MixFor5 {
    public static void main(String [] args) {
        int x = 0;
        int y = 30;
        for (int outer = 0; outer < 3; outer++) {
            for (int inner = 4; inner > 1; inner--) {
                x = x + 0; // THE BIT OF CODE YOU REPLACE WITH POSSIBLE CANDIDATES
                y = y - 2;
                if (x == 6) {
                    break;
                }
                x = x + 3;          
            }
            y = y - 2;
        }
        System.out.println(x+ " " + y);  
    }
}

Please just go through the code so that I can understand why the output is what it is.  You don't have to do it through every possible candidate...just pick one you think will help me understand this.  Thanks a lot
0
Comment
Question by:Ringitup
  • 5
  • 4
  • 3
  • +1
15 Comments
 
LVL 86

Expert Comment

by:CEHJ
ID: 12009124
This is beginning to look more like classwork Ringitup ...
0
 

Author Comment

by:Ringitup
ID: 12010733
No I bought a book this summer, "Head First Java" and it's one of the problems in the book.  They give you the problem and the answers but I just needed an explanation so I can understand it a bit better.  
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 12011136
Well i can't be bothered working it out - someone else will. But i will say that torturing yourself with this stuff is not really going to be very profitable for you, apart from perhaps getting you used to reading other people's bad code, but even then, you should never come across code as bad as that (of that type) in the real world. There are plenty of better things to be learning, such as how to design programs well, but of course it's harder to write books about that ...
0
 

Author Comment

by:Ringitup
ID: 12011245
Well I'm in a Data Structures course which is very java intensive and I happen to have the Anti-Christ as a professor.  Anyway, I'm doing what I can to make sure that I can understand coded programs which I'm hoping will help me write my code.  The other java books I have takes you from one concept to another so abruptly that I didn't have time to learn this years ago which is why I'm in this situation.  Let me know what you suggest so I can pass this last Java course I have for my major.  
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 12011600
>>Let me know what you suggest so I can pass this last Java course I have for my major.  

Well of course, if you have 'for loop tricks' as part of the syllabus, and you've seen that such problems could appear in the exam, then of course you must practise them. My comments were based on your implication that you were embarked on some sort of self-study ;-)
0
 
LVL 92

Expert Comment

by:objects
ID: 12012180
We offer an excellent tutoring service if you're interested, haven't had student fail yet :)

0
6 Surprising Benefits of Threat Intelligence

All sorts of threat intelligence is available on the web. Intelligence you can learn from, and use to anticipate and prepare for future attacks.

 

Author Comment

by:Ringitup
ID: 12012802
I think I'm beyond help but it sounds good to me
0
 
LVL 24

Expert Comment

by:sciuriware
ID: 12015238
Again I suggest that you download an IDE (ECLIPSE or so) so that you can see what happens
to those variables step by step, and you don't need us anymore.
;JOOP!
0
 

Author Comment

by:Ringitup
ID: 12018493
I tried getting Eclipse from the Eclipse sight but every time I went to unzip the download file it said there was an error and I should check it out in "C:Documents"  I'm trying to find other ways of getting it but I haven't found any as of yet.  If you know of any let me know.  Thanks again
0
 
LVL 24

Expert Comment

by:sciuriware
ID: 12018705
It is about 90 Mb. Does your disk overflow?
And it should just be unzipped into a directory, say C:/eclipse to work.
May be you should follow their advise and select a mirror to download from.
If you are in the far east, load it from JAPAN or so.

;JOOP!
0
 

Author Comment

by:Ringitup
ID: 12021602
I downloaded the file again and I created a folder on my C: drive called Eclipse.  I then extracted the files in this folder but I still received an error when I clicked the .exe file.  It says, "An error has occured.  See the log file C:\Eclipse\eclipse\configuration\.... I checked the log file but it was a bunch of jiberish that makes no sense.  I have installed other IDE's so this isn't a new thing.  I'm not sure what else it could be. Disk overflow is not a problem.  Anything else?
0
 
LVL 24

Accepted Solution

by:
sciuriware earned 80 total points
ID: 12023926
I made a shortcut containing:

E:\ECLIPSE\eclipse.exe -data D:\JOOP\JAVA\workspace

and it works like hell.
Before that I installed JAVA JRE 1.4       did you?

;JOOP!
0
 
LVL 24

Expert Comment

by:sciuriware
ID: 12246120
Thanks ....
I mean agreed!
;JOOP!
0

Featured Post

What Should I Do With This Threat Intelligence?

Are you wondering if you actually need threat intelligence? The answer is yes. We explain the basics for creating useful threat intelligence.

Join & Write a Comment

Suggested Solutions

Title # Comments Views Activity
network + 7 73
array220 challenge 8 48
strCopies  challenge 17 74
JUnit 4 @Before and @BeforeClass differences 3 24
Are you developing a Java application and want to create Excel Spreadsheets? You have come to the right place, this article will describe how you can create Excel Spreadsheets from a Java Application. For the purposes of this article, I will be u…
Introduction Java can be integrated with native programs using an interface called JNI(Java Native Interface). Native programs are programs which can directly run on the processor. JNI is simply a naming and calling convention so that the JVM (Java…
Viewers learn about the “while” loop and how to utilize it correctly in Java. Additionally, viewers begin exploring how to include conditional statements within a while loop and avoid an endless loop. Define While Loop: Basic Example: Explanatio…
Viewers learn about the scanner class in this video and are introduced to receiving user input for their programs. Additionally, objects, conditional statements, and loops are used to help reinforce the concepts. Introduce Scanner class: Importing…

746 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

11 Experts available now in Live!

Get 1:1 Help Now