homework

Initialized Variables lose Values after Function Call.

Question says it all, really. I'm not sure what the problem is. I'm fairly new to classes; my practical experience with them being close to nill, but I have read a fair amount about them. I have created a class ECard with the following constructor ECard::ECard( int bankNum, int PIN ) { m_BankNum = new int; m_PIN = ...

i want to get id through passing values in sql server 2008?

id Ptypefield Value 1 1 D 2 1 E 3 1 F 4 1 G 5 1 H 6 2 FL 7 2 IF 8 2 VVS1 9 2 VVS2 10 2 VS1 11 2 VS2 12 3 0.50 13 3 1.00 14 3 1.50 15 3 2.00 16 4 Marquise 17 4 Round 18 4 Pear 19 4 Radiant 20 4 Princess this table i want to get id no i give value like D and F this is ...

JOptionPane opening another JFrame

So I'm continuing my fight with this : http://stackoverflow.com/questions/2923545/creating-java-dialogs/2926126 task. Now my JOptionPane opens new window with envelope overfiew, but I can't change size of this window. Also I wanted to have sender's data in upper left corner, and receiver's data in bottom right. How can I achieve that ? T...

Is there a standard format string in ASP.NET to convert 1/2/3/... to 1st/2nd/3rd...?

I have an integer in an Access database, which is being displayed in ASP.NET. The integer represents the position achieved by a competitor in a sporting event (1st, 2nd, 3rd, etc.), and I'd like to display it with a standard suffix like 'st', 'nd', 'rd' as appropriate, rather than just a naked number. An important limitation is that thi...

why should the derived class constructor always access base class constructor?

I saw this question in one of my question papers. Whether the question is valid? ...

virtual function

what are virtual functions? what is pure virtual function? please explain with example ...

How to write Haskell function to verify parentheses matching?

I need to write a function par :: String -> Bool to verify if a given string with parentheses is matching using stack module. Ex: par "(((()[()])))" = True par "((]())" = False Here's my stack module implementation: module Stack (Stack, push, pop, top, empty, isEmpty) where data Stack a = Stk [a] ...

commercial tools in the soupUI

I have a project of soupUI and I don't have enough information about its' commercial tools in the soupUI, can you help me with that in a simple way? ...

Finding number of different paths

I have a game that one player X wants to pass a ball to player Y, but he can be playing with more than one player and the others players can pass the ball to Y. I want to know how many different paths can the ball take from X to Y? for example if he is playing with 3 players there are 5 different paths, 4 players 16 paths, if he is pl...

Java: Longest common subsequence

I have following code: public class LCS1 { public static String lcs(String a,String b) { String x; String y; int alen=a.length(); int blen=b.length(); if (alen==0 || blen==0) { return ""; } else if (a.charAt(alen-1)==b.charAt(blen-1)) { return lcs(a.substring(0,alen-1),b.sub...

[C++] Simple inheritance question

I was going over some sample questions for an upcoming test, and this question is totally confusing me. Any help would be appreciated. Consider the following code: class GraduateStudent : public Student { ... }; If the word "public" is omitted, GraduateStudent uses private inheritance, which means which of the following? Graduat...

Java method to format String fields

class Person holds personal data Its constructor receives 3 parameters, two Strings representing first and last names and an int representing age public Person(String firstName, String lastName, int age) its method getName has no parameters and returns a String with format "Lastname, Firstname" its method getAge takes no parameters...

Finding the complement of a regular expression

There's a question on my exercise sheet to find the complement of r = (a|b)*ab(a|b)* I've come up with a solution, but I'm not sure if it's correct. Please help me to check, and correct my errors. Thanks in advance. ...

Specifying Language for a grammar

Hi All, Is there any specific methodology followed to specify a language for given grammar ?? i.e. Is it necessary to run all the production rules given in a grammar to determine the language it represents? I don't have an example as such since the one I am working on is a homework question. [edit]: adding an example, Describe, in Engl...

Question about OOP and objects.

I have a school assignment: a Dog Show. My assignment is to create a website, where vistors can display results, and where Judges and Secretary can admin and CRUD. I have a small problem, one part of the assignment: the result should be based on two decisions from different judges, and after that checked by the secretary, before the re...

How do I reset my pointer to a specific array location?

I am a brand new programming student, so please forgive my ignorance. My assignment states: Write a program that declares an array of 10 integers. Write a loop that accepts 10 values from the keyboard and write another loop that displays the 10 values. Do not use any subscripts within the two loops; use pointers only. Here is my code: ...

Char error C langauge

i have a project for a course, i did almost everything but i have this error i dont know who to solve it... the project about doing our own shell some of them we have to write our code, others we will use the fork method.. this is the code, #include <sys/wait.h> #include <dirent.h> #include <limits.h> #include <errno.h> #include <std...

Matlab code help. Backward Euler method.

Here is the matlab/freemat code I got to solve ODE numerically using backward Euler method. However the results are inconsistent with my textbook results, and sometimes even ridiculously inconsistent. Please point out what is wrong with the code. I have already asked this question on mathoverflow.com no help there, hope someone here can...

Eclipse says I don't implement Enumeration, but I do

Goodmorning everybody, I'm having a little problem with a project for school. We are told to make an Iterator that implements Enumeration over a Hashmap. So i made this Enumeration: public Enumeration<Object> getEnumeration() { return new Enumeration<Object>() { private int itemsDone = 0; Collection<Lon...

Recursive Enumeration in Java

Hello everyone. I still have a question about Enumerations. Here's a quick sketch of the situation. I have a class Backpack that has a Hashmap content with as keys a variable of type long, and as value an ArrayList with Items. I have to write an Enumeration that iterates over the content of a Backpack. But here's the catch: in a Backp...