C# :: How To Order A Dynamic List
Nov 11, 2014
I have to following:
List<string> keyList = new List<string>();
keyList = data.First().Keys.ToList();
I also have a table with a column called display_order which i need to use in the order by
I have tried:
keyList = data.OrderBy(s => s.).ToList();
keyList = data.First().OrderBy(keyList).ToList();
orderBy = "Display_Order asc";
keyList = data.First().OrderBy(orderBy).ToList();
keyList = data.First().OrderBy().ToList();
keyList = data.First().OrderBy(keyList.display_order).ToList();
Am I missing something?
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Oct 17, 2014
i just need clarification on if this is what is considered a dynamic list of characters, i don't want a linked list.
Code:
struct dlist {
int size;
int maxsize;
char *datafield;
};
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Sep 22, 2014
I am currently trying to add to a linked list in sorted order but I have reached an impasse. I can get it to add in sorted order if it belongs in the beginning or second in the list. If i were to type in 9 then 4 i would get 49, but if i type in 5 it changes it to 559. I'm just at a loss and need some sort of direction.
#include "singly_linked_list.h"
#include <iostream>
using namespace std;
void add_node(node*& head_ptr, const int& payload){
if (head_ptr == nullptr) {
node* my_node = new node();
my_node->data = payload;
[Code]...
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Jan 29, 2014
I am trying to create an dynamic array (lno) This array will store addressess of different Linked list. What exactly I want is:- Take N Number of Linked List user want to create> eg. 2 now It will create 2 linked list for which I am trying to allocate memory.
Code:
struct node{
int data;
struct node *next;
}
first;
lno[0] Node 0's first address stored in ln[0] lno[1] Node 1's first address stored in ln[1] Here is the code in which I am facing problem with error Illegal structure Operation
Code:
#include<conio.h>#include<stdio.h>
#include<stdlib.h>
struct node
{
int data;
struct node *next;
};
[code]....
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Sep 22, 2012
I'm learning now linked list and dynamic allocate. I don't know how can I answer the program writing exercises.
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May 3, 2014
I was trying to reverse a linklist in reverse direction using the recursion. I was able to reverse n - 1 element but it is not printing the first one. Below is my code.
Code:
typedef struct linklist {
int data;
linklist *next;
};
void add(int data,linklist **node) {
[code]....
This is happening since recursion is starting from second node, which is due to reason not printing the first one when recursion print values from stack once
node != NULL
Condition is met.
Currently I am using below statement for printing the first element;
reverse_recur(node);
printf("
Print In Reverse Order
%d
",node->data);
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Apr 18, 2013
At the line number 65 that's my sort method first i sum up all the value in the nodes after that i want to sort the Nodes In ascending order but the method is not working ...
#include <iostream>
#include <conio.h>
using namespace std;
// Node Class
[Code] ....
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Oct 26, 2013
I need an explanation of what linked lists are. How the nodes are been defined and used, especially in an object oriented programming. With a code example.
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Oct 10, 2012
Why the first code snippet inserts properly into a list and the second code snippet does not. The position of the bold expressions are the only differences. iter, s and LS were declared elsewhere in main().
snippet 1.)
while (true) {
cout << "Enter string (ENTER to exit): ";
getline(cin, s);
if (s.size() == 0)
[Code] .....
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Apr 6, 2013
1. Construct a class diagram that can be used to represent food items. A type of food can be classified as basic or prepared. Basic food items can be further classified as meat, fruit, veg or Grain. The services provide by the class should be the ability to enter data for new food, to change data for food and to display existing data about food.
using this class definition write a main program to include a simple menu that offers the following choices:
1. Add food
2. Modify Food
3. Delete Food
4. Exit this menu
2. Read a list of numbers from a file and then print them out in reverse order. State whether the list is palindromic or not.
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Sep 13, 2014
I need to make singly and doubly linked list classes that can insert elements. Once the lists are created, I need to order the linked list elements according to a certain pattern.
order2 pattern:
input: 0 1 2 3 4 5 6 7
output: 1 0 3 2 5 4 7 6
order3 pattern:
input: 0 1 2 3 4 5 6 7 8 9 10 11
output: 2 1 0 5 4 3 8 7 6 11 10 9
sequence order pattern:
input: 0 1 2 3 4 5 6 7 8 9 10 11 12 13
output: 1 0 4 3 2 8 7 6 5 13 12 11 10 9
reverse pattern:
input: 0 1 2 3 4 5 6 7 8 9
output: 9 8 7 6 5 4 3 2 1 0
My instructor has given the description of the required classes in a file interfaces01.h as:
#pragma once
#include <cstdlib>
struct ISingleNode {
ISingleNode() {}
virtual ~ISingleNode() {}
virtual void setValue(int value) = 0;
virtual int getValue() = 0;
[Code] ....
However when I am compiling these files in vs 2013 I am getting the error: cannot open include file Singlenode.h,Singlelist.h.
Also I am not too sure about the sorting and reverse logic. How can I implement these logics.
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Nov 29, 2014
Implement a recursive function named void printBack(DoublyLinkedNode<T>* node) for the class DoublyLinkedCircularList which will print out the elements in the list from back to front. The function is initially called with the first node in the list. You may not make use of the previous(prev) links
This is my solution where I got 2 out of a possible 3 marks:
template<class T>
void DoublyLinkedCircularList<T> :: printBack(DoublyLinkedNode<T>* node) {
if(node->next == NULL) //Correct- 1 mark
return 0;
else
printBack(node->next); //Correct - 1 mark
cout << current-> element << " ";
}
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Mar 24, 2013
I am supposed to make a program that take a list of integers from the user and to delete the smallest part of it in order to make it sorted in non decreasing order ..
example : input : 1 2 3 4 5 8 7 6 7 8 9
output : 1 2 3 4 5 6 7 8 9 ( delete : 8 7 )
I need a code that use a technique similar to the merge function to achieve linear time ..
this code works but it is in quadratic time :
int main () {
cout<<"Enter a list of numnbers ending with the sentinel -999:"<<endl;
int A[1000];
int n = 0;
int x;
cin>>x;
while(x!=-999)
[Code] ....
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Jan 4, 2013
I'm writing a program in which I have to use a matrix to represent a file in code. because it's a file, the size of the matrix is undefined, and therefore the matrix has to be dynamic. I found out that my compiler doesn't like dynamic multidimensional arrays, so I was thinking of this matrix as a dynamic (monodimensional) array of other dynamic (monodimensional) arrays. My program (and thus this example) uses unsigned chars.
unsigned char variable=something;
unsigned char**matrix=new unsigned char*[lenghtOfMainArray];
for(int rowNumber=0;rowNumber<lenghtOfArray;rowNumber++)
{
[Code].....
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Oct 7, 2014
i'm implementing a playerclass for a game.. in the game there are multiple player types, weapons ect.. i just wanted to turn my players weapons into a dynamically allocated c_str. once i added my: Destructor, Copy Constructor and Overloaded Assignment Operator. My initial values became corrupted and i cannot fix them.
Player2.cpp
#include <string.h>
#include <iostream>
#include <cstdlib>
#include <iostream>
#include "player2.h"
#include "dice.h"
#include "gamespace.h"
[code]....
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Apr 23, 2013
From HP / Microsoft (Visual Studio C++) <list>:
Code:
struct _Node
{ // list node
_Genptr _Next; // successor node, or first element if head
_Genptr _Prev; // predecessor node, or last element if head
_Ty _Myval; // the stored value, unused if head
};
The stored value is wasted space for the list head. Is there any advantage to implementing list using the same structure for a list head and node?
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Dec 31, 2014
Code:
// Write a function called insertEntry() to insert a new entry into a linked list.
Have the procedure take as arguments a pointer to the list entry to be inserted (of type struct entry as defined in this chapter), and a pointer to an element in the list after which the new entry is to be inserted.
// The function dveloped in exercise 2 only inserts an element after an existing element in the list, thereby prenting you from inserting a new entry at the front of the list.
(Hint: Think about setting up a special structure to point to the beginning of the list.)
#include <stdio.h
struct entry1 {
int value;
struct entry1 *next;
};
[code]...
This is a working version of the exercise, but I don't think I'm doing what's asked. I was able to add an element to the beginning of the list using an if statement, not creating a special structure that points to the beginning of the list. How would I go about creating a special structure that points to the beginning of the list to add a new element at the beginning of the list?
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Jan 20, 2015
I'm trying to display a list of MSMQ messages in a list box based on a drop-down list holding the environment.So i've setup the binding and i know that the list loads but nothing shows up in the list? I should be setting like a display member or something but i'm not entirely sure
const String msmqAccelaDev = "FormatName:DIRECT=OS:tcc-intsrvTCCIntegration.MSMQ.Service.Dev/TCCMessagingService.svc";
const String msmqAccelaProd = "FormatName:DIRECT=OS:tcc-intsrvTCCMSMQFail";
const String msmqAccelaTest = "FormatName:DIRECT=OS:tcc-intsrvTCCIntegration.MSMQ.Service.Test/TCCMessagingService.svc";
String currentQueue = "";
private void environmentChange()
[Code]...
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Dec 4, 2013
I want to write a function that can accept any arbitrary array of doubles and return the index of the first element that is out of order or -1 if the elements are in order. Why my for loop exists immediately after an element is found to be out of order. What is wrong with my code and why?
Code:
int out_of_order(double stuff[], int size)
{
int i;
//run through entire array
[Code]....
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Mar 13, 2014
SO lets say I have a file that says
10 tennent
9 Eccleston
12 Capaldi
11 Smith
How do I get the number's in order but not changing the name it goes with? SO here is how I started it
# include <iostream>
# include <fstream>
# include <sstream>
# include <set>
# include <list>
# include <string>
# include <cctype>
# include <vector>
[Code] ....
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Jul 25, 2013
I have recently found this article: URL.....In their example, by declaring variables in other order, they saved 8 bytes. However, shouldn't compiler take care of it? Is it true, and should I declare variables more carefully?
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Dec 11, 2013
The purpose of doing this is so that the top of the if statements is not preferred over the bottom. I tried assigning enum values to each case. Then choose a random integer r from 0 to the size of the std::list myList containing those enum elements. The enum value is found using it = std::next (myList, r). Then if the if statement corresponding to that enum value is false, then myList.erase (it), and repeat the process with the newly reduce myList. It works, and everything seems nicely randomized. But it is disappointing much slower than when I used the original if-else statements (it is being applied hundreds of times).
Here is a snippet of my code (I decided not to use switch statements because it looked too clumsy):
std::list<FacingDirection> guyFacingDirections = {Positive_x, Negative_x, Positive_y, Negative_y, Positive_xPositive_y, Positive_xNegative_y, Negative_xPositive_y, Negative_xNegative_y};
while (true) {
const int r = rand() % guyFacingDirections.size();
[Code] .....
There is a crowd of girls. Each guy will choose a girl, and then choose a facing direction to dance with his chosen girl. But not all facing directions are possible if someone is standing at the spot he wants to stand at to get his desired facing direction. Without randomizing the if-else statements, most of the guys will end up facing the same direction, which I don't like.
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Aug 29, 2013
I was working on a program. "hey if this program were to be published it would be bad for people to see all dll files are in the exe directory"....
So I wondered if there is a way to make compiler see a folder in the same directory with exe file which holds all dll files?
Also look at some programs and saw they have a dll folder which holds dll files....
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Apr 21, 2014
I am trying to build a c++ that reads user input and arrange letters in ascending order. for example, if the user input: Hello my name is Moe! the output will be: !aeeehillmmmnoos (ascending order)
my problem is that when i input hello my name is moe the output will be ehllo (not completing other letters) also when i change class size to 50, it outputs unknown weird letters.
This is my code:
#define CLASS_SIZE 10
#include <stdio.h>
#include <iostream>
[Code].....
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Mar 17, 2015
I am currently writing a program and am having some trouble figuring out how to get the order correct in the output.
Here is my code:
using System;
using System.Collections;
using System.Text;
namespace The_Last_Survivor {
class Program {
static void Main(string[] args) {
[code].....
The output I need to have is:
Actors Count Audition Order
1 1 1
2 1 1 2
2 2 2 1
3 1 1 2 3
3 2 2 1 3
3 3 3 1 2
4 1 1 2 3 4
4 2 2 4 3 1
4 3 3 2 4 1
[code].....
Right now the numbers are just printing in order 1-9 and not changing.
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Mar 10, 2015
i have a list
ID | Location | Quantity
1 | 2 | 5
2 | 3 | 10
3 | 4 | 8
i want the order to be in ascending order by Quantity so it should produce this
ID | Location | Quantity
1 | 2 | 5
3 | 4 | 8
2 | 3 | 10
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