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Type: Posts; User: coder752

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1. ## Thread: Valid question or not?

by coder752
Replies
3
Views
997

### Re: Valid question or not?

How can it be decreasing when the question stated show that its increasing, I sort of understand your way of calculating it but I don't think the formula is right.
2. ## Thread: Valid question or not?

by coder752
Replies
3
Views
997

### Valid question or not?

Can you check to see if this is even a valid question. I got this challenge from someone and I believe there's no way to solve it but have a look. I can't find a perfect bounded above value...I...
3. ## Thread: Equations Problem

by coder752
Replies
3
Views
1,396

### Re: Equations Problem

I solved it now...thanks.

But please help me with my other Discrete Structures question:

http://www.codeguru.com/forum/showthread.php?t=485507
4. ## Thread: Equations Problem

by coder752
Replies
3
Views
1,396

### Re: Equations Problem

Thanks, I will try to read the link first, attempt the question, and post my findings to see if I'm right...or need additional help.

Thanks so much, also could you take a look at my other thread...
5. ## Thread: Equations Problem

by coder752
Replies
3
Views
1,396

### Equations Problem

I need help with this question:

Find what a,b,and c is. They must be integer answers.

The equation goes like this:

35a+55b+77c=1

I'm totally confused, I can think of a solution but...
6. ## Thread: Discrete Problem Help

by coder752
Replies
0
Views
844

### Discrete Problem Help

Hey all,

I need help on this problem. Say that x^2 is congruent to 3 (mod 83).
Find the inverse of x (mod 83).

I made a small example case first: (I think all this is wrong now) Please...
7. ## Thread: Tricky question that deals with big O notation and little o notation

by coder752
Replies
4
Views
2,295

### Re: Tricky question that deals with big O notation and little o notation

I suppose it is.

Does that help any bit?

Basically I believe its asking for a function that is not little o(1) but when you plug in the number 2009 in the new function it will equal to 0 thus...
8. ## Thread: Tricky question that deals with big O notation and little o notation

by coder752
Replies
4
Views
2,295

### Re: Tricky question that deals with big O notation and little o notation

Ok, I'll give you the whole statement.

This is a two parter question to be treated separate.
Suppose f(x) is a function such that f(x) = O(1).

Can e^{f(x)} = o(1)? Yes or no, provide...
9. ## Thread: Induction Question

by coder752
Replies
1
Views
934

### Induction Question

I have another induction question. Here's my work. I think I got it right(except the base case).

Help is greatly appreciated. Thanks in advance.

The question goes as this: Prove using...
10. ## Thread: Tricky question that deals with big O notation and little o notation

by coder752
Replies
4
Views
2,295

### Tricky question that deals with big O notation and little o notation

Hi,

I have this question that seems trivial to me.

I need to find a function which is not o(1) but where f(2009) = 0 <---fyi this is a zero
using the fact that f(x) is a function such that...
11. ## Thread: Congruency with Mod (Induction Question)

by coder752
Replies
6
Views
1,318

### Congruency with Mod (Induction Question)

Hi,

I wanted to clarify my answer for this question. Please note if I did anything wrong.

The question uses induction.

Prove that for every positive integer n, 4^n+14 congruent 0(mod 6)
...
12. ## Thread: Induction

by coder752
Replies
5
Views
1,673

### Re: Induction

So the next step would be this:

P(k): 1+1+2+3+5+8+.........k= (k+2) -1

And the next step would be this:

P(k+1) 1+1+2+3+5+8+.......k+k+1=(k+2)+1-1 which would simply be:

P(k+1)...
13. ## Thread: Induction

by coder752
Replies
5
Views
1,673

### Induction

I need help with this challenging question for my computer discrete structures/data structures class.

Ok I need to prove that the sum of the first n fibonacci numbers is equal to the (n+2)nd...
14. ## Thread: GUI Help Java Program

by coder752
Replies
1
Views
744

### GUI Help Java Program

I don't know what to use, a JFileChooser, or a JTextArea?

It's suppose to read in a social security (sample) file, if it contains anything other than the 9 digits, it will show the exception. ...
15. ## Thread: GUI example won't work

by coder752
Replies
6
Views
2,256

### Re: GUI example won't work

Ok, so I transferred my code to a new directory called components. I placed TextDemo.java in there. I added this line of code in the heading as well

import components.*;

Next...
I did a...
16. ## Thread: GUI example won't work

by coder752
Replies
6
Views
2,256

### Re: GUI example won't work

Error message reads like this:

Exception in thread "main" java.lang.NoClassDefFoundError: TextDemo (wrong name:
components/TextDemo)
at java.lang.ClassLoader.defineClass1(Native Method)...
17. ## Thread: GUI example won't work

by coder752
Replies
6
Views
2,256

### GUI example won't work

I got this code from the Java Sun site.

Why won't it run?

package components;

/* TextDemo.java requires no other files. */
18. ## Thread: Linked List

by coder752
Replies
12
Views
2,799

### Re: Linked List

Thanks! I just put that line in its new location, it works now.

I don't think I could do the other method Xeel said earlier since I didn't learn generics yet.
19. ## Thread: Linked List

by coder752
Replies
12
Views
2,799

### Re: Linked List

So I put that line above that, and I get 2 errors. Now what?

Here's the new main.

/**
* Sole entry point to the class and application.
* @param args Array of String...
20. ## Thread: Linked List

by coder752
Replies
12
Views
2,799

### Re: Linked List

Not uh!

It's not as easy as pie.

In case you didn't try to compile it urselves.

This is what I get.

Note: LinkedListExample.java uses unchecked or unsafe operations.
Note: Recompile with...
21. ## Thread: Linked List

by coder752
Replies
12
Views
2,799

### Linked List

How can I compile this code found on this site?

http://www.javafaq.nu/java-example-code-90.html

The code is too long to paste here.

It's a linked list example.

No, its not a dumb question...
22. ## Thread: Java I/O Question & toString question

by coder752
Replies
5
Views
948

### Re: Java I/O Question & toString question

System as in what the computer is calculating aka (procedures done internally)
23. ## Thread: About abstract classes

by coder752
Replies
2
Views
729

### Re: About abstract classes

Thanks for the interpretation.
24. ## Thread: Java I/O Question & toString question

by coder752
Replies
5
Views
948

### Re: Java I/O Question & toString question

[QUOTE
You'll have to explain what you mean.
[/QUOTE]

I mean what is the system doing while the toString is being used and what the system is doing while the program is suppose to have though it...
25. ## Thread: About abstract classes

by coder752
Replies
2
Views
729

### About abstract classes

Why you can't declare a class abstract and final?

Is there some internal rule the system just rejects, or what?

Can somebody provide a sample program demonstrating this?

Thanks,

Coder752
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