I have a CSV file which has the following format: id,case1,case2,case3 123,null,X,Y 342,X,X,Y 456,null,null,null 789,null,null,X above is the sample data that could be in that file. So for each line I need to know which of the case is not null. Is there an easy way to find the which case(s) are not null instead of splitting the st...
example, I have number 345.38 , 2323.805555 , 21.3333 . i want to get the number after the decimal and round it up. 345.38 --> 4 2323.805555 --> 8 21.3333 --> 3 Thanks ...
I need a suggestion for an efficient data structure for the following problem. I have two lists of students (male and female) with their respective classes (sorted by date) they have already taken. The list is already alphabetized with their last name, first name. A user will give a student name, ie. student X, and what the program nee...
char *stringmult(int n) { char *x = "hello "; for (int i=0; i<n; ++i) { char *y = new char[strlen(x) * 2]; strcpy(y,x); strcat(y,x); delete[] x; x=y; } return x; } I'm trying to figure out what the flaws of this segment is. For one, it deletes x and then tries to copy it's values over to y....
Disclaimer: The context is a project I'm working on as part of my Master's degree. I guess it qualifies as homework. Introduction (feel free to skip to the bottom line) Curved 3D surfaces are commonly displayed as a large set of very small triangles. Each triangle has the following properties: 3 corners uniform color Such tha...
I'm trying to implement a findall predicate in Prolog (yes I know it's built in, this is for an assignment). It is written as follows: my_findall(N,P,Pred,L) :- Pred, not(new(N,P)), !, assert(new(N,P)), my_findall(N1,P1,Pred,L1), L=[N,P,L1], retract(new(N,P)). my_findall(_,_,_, []). For some reason it only gives me the first solut...
I'm telling my program to print out line 53 of an output. Is this error telling me that there aren't that many lines and therefore can not print it out? ...
Hi all! I have a situaion in which I want to declare a class member function returning a type that depends on the class itself. Let me give you an example: class Substring { private: string the_substring_; public: // (...) static SubstringTree getAllSubstring(string main_string, int min_size); }; And Su...
for a in ('90','52.6', '26.5'): if a == '90': z = (' 0',) elif a == '52.6': z = ('0', '5') else: z = ('25') for b in z: cmd = exepath + ' -a ' + str(a) + ' -b ' + str(b) process = Popen(cmd, shell=True, stderr=STDOUT, stdout=PIPE) outputstring = process.communicate()[0] ...
Here is my input XML: <Books> <Book> <BookId>1</BookId> <Des>Dumm1</Des> <Comments/> <OrderDateTime>04/06/2009 12:37</OrderDateTime> </Book> <Book> <BookId>2</BookId> <Des>Dummy2</Des> <Comments/> <OrderDateTime>04/07/2009 12:37</OrderDateTime> </Book> <Book> <BookId>3</BookId> <Des>Dumm...
If I have the following code: IterateArray(object[] array) { for(int i=0; i<array.length; i++) { Dosomething(array[i]); } } and the Dosomething(object) method's time performance is O(log n), is the overall performance of IterateArray O(n) or O(n log n)? Thanks. ...
I have a programming assignment in Perl that requires me to do the following: Creates a table in a mySQL database, and inserts these records into it: Loads the data from the table into an array of instances of class Son. Using the array, creates HTML code representing a father-son tree, and prints the html code to STDOUT. It's not nece...
I created a vector out of a struct to store multiple types of values. However, I can't get input to work. #include "std_lib_facilities.h" struct People{ string name; int age; }; int main() { vector<People>nameage; cout << "Enter name then age until done. Press enter, 0, enter to continue.:\n"; People name; ...
Given two finite sequences of string, A and B, of length n each, for example: A1: "kk", A2: "ka", A3: "kkk", A4: "a" B1: "ka", B2: "kakk", B3: "ak", B4: "k" Give a finite sequences of indexes so that their concentration for A and B gives the same string. Repetitions allowed. In this example I can't find the solution but for example if...
Hi. I'm trying to implement my own List system in Java. the List class file : package RoutingDemo.List; /** * A 2-way Linked-List to store generic elements. * */ public class List { /* Instance Variables --------------------------------------------------------------------------- */ /** * Reference to el...
What is the role of stack in a microprocessor? ...
Hi. I have an assignment about fftw and I was trying to write a small program to create an fft of an image. I am using CImg to read and write images. But all I get is a dark image with a single white dot :( I'm most likely doing this the wrong way and I would appreciate if someone could explain how this should be done. I don't need the ...
public static void CreateMaxHeap(int[] a) { for (int heapsize = 0; heapsize < a.Length; heapsize++) { int n, p; n = heapsize; while (n > 0) { p = (n - 1) / 2; if(a[n]>a[p]) Swap(a,n,p); n = p; } } } // end of create heap ...
how do i make this so once the user inputs a number and presses enter(or something) it runs the if else statements! please help! public static void main(String[] args) { System.out.println("please guess the number between 1 and 100."); boolean run = true; int y = 0; Random ran = new Random(); int x = ran.nextInt(99); while (ru...
I have text file that looks like this: 1 1 1 1 1 2 3 5 4 4 5 5 I want to read this text file into array of lines and display it. Can anyone help me do this? ...