Ok so I am having difficulty adding nodes to my linked list....
how to add a third node while keeping track of the address...Thats where I get lost..I don't know how to keep track of the addresses of the next node..
#include <iostream>
using namespace std;
typedef struct Node{
[Code]......
I wrote function to add to elements in the list, but when I call printList function it returns me empty list ! I'm new with linked list in C
Output:
Empty list
List is empty add element at the begining
New node with packet num 245
List is not empty add element at the end
New node with packet num 486
Linked list: Empty
Main:
Code:
int main(){
struct node * start ;
start = NULL;
int i;
/*Check if list is empty*/
if(start == NULL){
printf("Empty list
[Code]...
I'm simply trying to locate possible logic errors because if I could fill this list properly, I can finish my project very easily. This is just a small portion of a very immersive project.
I am trying to create a linked list that holds objects of type Location *. I have Location defined as
typedef struct location{
char *name;
char *longer;
char *shorter;
[Code].....
I wish to clarify but can not find where to edit the OP. I believe the list is still empty because I attempt to do a simple read through the list by accessing the head and then reassigning the list to the tail of the list. However, the program never enters the while loop
while(world !=0){
I created a linked list, but I wanted to make sure it was storing each word appropriately and going over the text. It compiles and runs, so I know it works. I'm just not sure if it's doing what I want...
Code:
#include <stdio.h>
#include <stdlib.h>
//creating the linked list
struct node {
[Code].....
I have a problem with inserting a node between two nodes.
Code:
#include <stdio.h>
#include <stdlib.h>
struct listelem {
int nbr;
struct listelem *next;
[Code] ....
I am coding a singly-linked list container. Of course, internally it uses Node<T>.
Question: what is the correct way to use the allocator given by the user? I ask, because I've read this on the rival C++ Reference:
std::list<T, A> allocates nodes of some internal type Node<T>, using the allocator std::allocator_traits<A>::rebind_alloc<Node<T>>, which is implemented in terms of A::rebind<Node<T>>::other if A is an std::allocator
[URL]...
The above doesn't seem right to do, because then what should pointer and const_pointer be?
using pointer = std::allocator_traits<Alloc>::pointer;
using const_pointer = std::allocator_traits<Alloc>::const_pointer;
// but we're using Alloc<Node<T>> not Alloc<T>
// so maybe do this?
using pointer = value_type *;
using const_pointer = const value_type *;
I am creating a Linear linked list in c++. I've written all the functions for it, but now I want to try and do them using recursion.
I managed to make functions for adding and displaying nodes on the list, but I am stuck on the function for removing nodes. First I want to try and write a function the removes the last item on the list. But for some reason my code isn't working properly.
Here is the code :
void removeLastItem(node * &head) {
if(!head) {
delete head;
head = NULL;
[Code] ....
NODE - My structure name
NEXT - The pointer to next element.
HEAD - The first (head) pointer.
The couts in the if statements are just for testing. In fact after I Run my program it does as it is supposed - enters the second if /b]case as many times as there are elements and then executes the first [b]if statement. But for some reason it does not delete the actual node.
I've been working on this linked list priority queue . I know that the root of the problem is in my swapUp() function (swapping the positioning of two nodes based on their priority), because the list works great up until it is called. The seg fault is not actually being caused by swapUp(), it's being caused by peekAt(), which returns the element in the node at position n. But the error does not occur unless swapUp() is called first, so that is where the issue is (I think).
There is also a seg fault being caused in the destructor, which I believe may have the same root cause in swapUp().
PRIORITY QUEUE:
#ifndef JMF_PriorityQueue
#define JMF_PriorityQueue
#include <iostream>
#include <string>
template <typename T>
class PriorityQueue{
[Code] .....
Okay, so I've tried implementing SwapUp() in a different new way, but it's still giving me the same problem
template <typename T>
void PriorityQueue<T>::swapUp(Node * target){
Node * partner = target->next; //Partner = target next
[Code] .....
This is such an elementary logic problem I don't know why I'm having so much trouble with it.
I'm trying to sort the elements in a linked list which contain a variable amount of data in any given case. In the sample code, the code is more static, but I plan on adding it to much more dynamic code once I have it figured out. My main problem is that I am not sure how to sort the linked list while still keeping the correct pointers to the nodes. I thought about writing my own custom quick sort instead of using the C-standard library function, but how I would keep the pointers to the next nodes correct eluded me. Here is my code so far :
Code:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
[Code]......
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] ....
How to randomly insert certain numbers into a linked list with 10 nodes. Meaning I want to put for example numbers 1 5 10 15 20 25 30 35 40 50 in random locations in the linked list.
View 1 Replies View RelatedI don't know why my code is not working. It's from line 249 - 266
void SLL::deleteDuplicate(){
Node* temp = head;
Node* p = temp;
[Code].....
I need to sort the Linked list from highest to lowest or in this case. The highest Bribe gets the higher priority on the list. I have looked all over the internet and have found some pretty decent examples but I still don't truly understand how to sort it. I think from looking at so many examples I have confused myself even more. I was reading about using Doubly Linked list but I don't even know if were allowed to use that.
1. The program runs perfectly at the moment. It prints out the list but does not sort it.
2. How to make sure that I am deleting the allocated memory correctly in the deconstructor.
Header File
#include <iostream>
#ifndef PERSON_H
#define PERSON_H
struct PersonRec;
class PersonList {
[Code] .....
I have been trying to swap two adjacent nodes for my linked list sort. Its not meant to be optimal, just meant to work. My problem is I either lose nodes or get Access Violation errors.
PHP Code:
void List::sortList() {
Node *current = _head;
Node *rightNode = NULL;
if (_head->_data > _head->_next->_data) {
current = _head;
rightNode = _head->_next;
[Code] .....
The code below is for reversing every k nodes of the linked list. While running the Program it crashes.
Code:
#include<stdio.h>
#include<stdlib.h>
struct node {
int info;
struct node *next;
[Code] ....
i want to make a program that accepts 15 items in a singly linked and sorts the nodes.
View 1 Replies View RelatedCode:
// 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?
I'm trying to make a function that lets me pass an index and a string and will insert the string at that index in the linkedlist..
Code:
typedef struct node {
char* value;
struct node* next;
}
[code].....
I've been struggling with linked list for a few days. I've tried performing a few operations. Here is my code. the add_begin() function doesn't seem to work.
#include<iostream>
using namespace std;
struct node {
int data;
node *next;
[Code] .....
I am having trouble adding a second node to a doubly linked list. I define my list as follows:
Code:
typedef struct Node {
char command[256];
int length;
struct Node *prev;
struct Node *next;
} userInput;
}
[code]...
Now, when I iterate back through my list (I want to start at the tail and work my way towards the head), I can only ever get the 1st node to print, then the 2nd node is garbage, which means, to me, that I've linked something wrong.
Should my if statement be
if (tail== NULL) or if(tail->next == tail) ?
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]...
I have a .cpp file which contains 5 smaller defined classes. In my missile class I have a default constructor and a constructor that I invoke
class Missile{
private:
bool isHuman;
[Code]...
My issue is when creating and adding the pointer object; it doesn't seem to create a new instance of the class-the Missile objects all share the same xPos value which is always the first xPos when the "fire" command is given. The "Missile *missile = new Missile(xPos, yPos, true);" line does not seem to create a new instance of the object with different variables but instead creates a new object with the same variables. Is it necessary for me to always make a separate .cpp and .h file for any class I want to create multiple instances of or can I keep the smaller classes in the same file and still create a new separate instance of the class?
can we pass two linked lists as argument in a member function to add two linked lists? and how to access them both in the function??
View 1 Replies View RelatedI am having a bit of difficulty with implementing an object oriented program that uses both linked lists and operator overloading. The program calls for adding and multiplying polynomials together, with each single polynomial being represented as a node of a linked list (which is further a data member of an object of a class I have defined to implement this program). For example:
polynomial A will be: 3x^4 // 1 node of a linked list
polynomial B will be: 5x^2 // 1 node of a linked list
polynomial C will be blank for the time being. // empty list
Now, I need to use operator overloading so that this following line of code can be implemented:
C = A + B;
C should now be: 3x^4 + 5x^2.
The checklist of which parts of my code that work:
constructor works;
copy constructor works;
destructor works;
operator= works;
print function needs work but i can worry about that later;
operator* work on later
Here is my code:
#include <iostream>
using namespace std;
struct termNode {
int exp; // exponent
int coef; // coefficient
termNode * next;
[Code] ....
For the time being I need to add multiple nodes together (with the result being in descending order). So for example:
polyType a(2,3), b(4,5), c(6,7), d;
d = a + b + c;
d.print(); // should print out 7x^6 + 5x^4 + 3x^2, but it will only print out: 3x^2 + 7x^6
I created a bunch of nodes and I made each one before one another. Im having trouble adding another node to the last one.
#include <iostream>
using namespace std;
struct nodeType{
int info;
nodeType *link;
};
void printList(nodeType *head) {
nodeType *current = head;
[code]....
The node with the value of 400 is the node that has to be last.. How would that work?