C/C++ :: Delete Value At Nth Position In Linked List
Sep 30, 2014
#include <iostream>
#include <string>
#include <fstream>
#include <iomanip>
using namespace std;
struct ddpl{
string author, title, show_title, choice, user_name, borrowed_book_title, borrowed_book_author;
[Code] ....
I don't know how to do this if this was deleting by position would have been easier, but the user don't know and don't have to know the position of every book in the list it should delete the books by there title and i'm kinda lost of the delete function at line 47 and particularly at line 55 and 62, it kind difficult to traverse with the values or the data of the node for the position is simpler.
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Mar 4, 2014
I have been working on a program that records the time it takes the user to complete a maze. The user's time is then recorded and inserted into a linked list of structures based on the time (from quickest time to longest). I wrote some code that does this, but I was wondering if I can make the code more concise/make sense -- like only using two pointers or having less if statements.Here is a struct that are the elements of the linked list (I also have a global variable to keep track of the head of the list:
Code:
//stores player's best time.
struct PlayerTime {
char name[MAX_STR_LEN];
float seconds;
struct PlayerTime* next;
[Code]....
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Jul 26, 2013
I'm having trouble inserting a node in a nth position into a double linked list. My for loop is giving me an exception handler error and I can't link the node after the new node is inserted back to the new node. Here is my code,
void mylist::insertpos(const int &pos, const string &s, const int & c) {
listnode* temp1 = new listnode(s,c);
temp1->s =s;
temp1->next = NULL;
[Code]....
I attached my header file incase you need to see the definitions for my objects.
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Jul 10, 2014
Still toying with my self-coded linked list class and now another question: should I delete each node of my class with the delete in the class destructor or is it done automatically when the main() function ends?
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Feb 15, 2012
I have made this program for linked list, but i have one problem with it. I want to make a function that will delete all same values I inuput in the list.
Example: if user inputs 5 I want to delete all 5 for the list. I have tried doing this with the loop inside regular function that erase single value.
This is function that erases single value:
Code:
void list::Delete (int a) {
node *temp=head;
if (temp==NULL)
return ;
if (temp->getNext()==NULL) {
delete temp;
[code]....
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Jan 20, 2014
Code:
#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
struct node {
int data;
struct node *next;
[Code] ....
The above code is a SLL. I have a problem in my deleteNode function. I can't delete the exact data on the list. How to do this right?
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Oct 18, 2014
I was trying to write a function in C to delete a node(only from the middle) from a Singly Linked List. I wrote one but not sure if the code will work fine under all test conditions. I have tested it and shows no error so far.
Code:
void deleteAt(struct node *root, int number){
while(root->link != NULL) {
if(root->link->item == number) //checks if the next node is the element to be deleted {
root->link = root->link->link; //points the link of the element to be deleted to the element before the element to be deleted
}
else
root = root->link;
} }
Or is there a better way to do this?
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Aug 23, 2013
what is the process to delete everything from a singly linked list. Like S= 1->2->3->... I want to remove all the values from S and reuse it again to store new datas.
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May 30, 2013
I'm working on a linked list and was wondering how this looks to everybody else for a deleteList function.
void deleteList(Node* head)
{
Node* iterator = head;
while (iterator != 0)
[code].....
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Oct 19, 2013
I am trying to write a delete algorithm for an ordered linked list. Search and traverse I think I have down but delete is giving me fits. It crashes every time.
I have a private pointer to a ListNode strcuture called head in my TestLL class. The ListNode structure contains int Key, double dataValue, and ListNode *next. The function returns true if the node to delete was found and deleted or false if it was not found.
Code:
bool TestLL::Delete(int Key) {
ListNode *back = NULL, *temp = head;
//Search for the node to delete
while((temp != NULL) && (key != temp -> key))
[Code] .....
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Oct 10, 2014
I 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].....
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Aug 22, 2014
I am trying this without a head/start pointer which would generally hold the address of first node. I have 3 nodes here from which I am trying to delete last node, but its not happening. I might be wrong in my logic and this is my first linked list program.
#include <stdio.h>
#include <stdlib.h>
struct dll{
struct dll *prev;
int data;
struct dll *next;
[Code] ....
output::::
add of p1::0x9605008 add of p2::0x9605018 add of p3::0x9605028 add of p1->prev::(nil) add of p1->next::0x9605018 add of p2->prev::0x9605008 add of p2->next::0x9605028 add of p3->prev::0x9605018 add of p3->next::(nil)
no of nodes 3
enter the addresss of node to delete it
0x9605028
after deletion attempted
add of p1::0x9605028 add of p2::0x9605018 add of p3::0x9605028 add of p1->prev::0x9605018 add of p1->next::(nil) add of p2->prev::0x9605008 add of p2->next::0x9605028 add of p3->prev::0x9605018 add of p3->next::(nil)
no of nodes 3
In this example i am trying to delete the node 3 which is p3, by deleting its address 0x9605028. But after deletion the node count is still 3 and addresses are like unexpected!
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Sep 23, 2014
I am creating a doubly linked list that will store strings, for example:
struct node{
string data;
node* next;
node* prev;
};
node* head; //first element from left to right (global)
node* tail; // last element from left to right (global)
And here is the function:
void deleteNode(int n){
struct node* temp1 = head;
if (n == 1){
head = temp1->next;
free(temp1);
[Code] .....
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Aug 12, 2014
My program seems to be working fine, except for when I call on my delete function. I don't receive any errors, but when I call the delete function my program outputs nothing and freezes. As in, my print function (which is called before the delete function) doesn't even work. I've tried removing bits of the function to see if I could pinpoint where exactly the issue is, but I've had no luck.
#include <iostream>
#include <string>
using namespace std;
class List{
private:
struct node{
string _data;
[Code] ....
And the function that is causing me trouble:
void deleteNode(string data){
node* del = NULL;
t = h;
n = h;
while(n != NULL && n->_data != data){
[Code] .....
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Dec 9, 2014
I have to manage a Clinic. I need to delete a booking (for example, if John said he's coming on March 22nd at 15:30 but then he say he's not going to come, I have to delete that booking so another person can use it).
idSearched: the id of the person that is not going to come. I have a lot of specialties and each one has a list. So I ask for the speciality to delete the node (the node contains John's booking). If I don't find it, I return (-1). searchSpecByID return a pointer to the list where the speciality is. So head will point to the first node of the list. In nodeToDelete I have the node I want to delete.
The program detects OK when is the first in the list and when not, but it doesn't delete the node.
Code:
typedef struct bookingList{
tSpecialty specialty;
struct nodo* intro;
} tList;
[Code].....
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Feb 4, 2015
I have a mfc project with a List Control (Report View).
When I run the project, the list control appears in the middle of the window instead of appearing where I placed it.
Is there a qay to make it stay where I need it?
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Aug 16, 2013
im trying to code a simple list box for my self made GUI but i seem to be stuck at the scroll bar. I already finished with the calculation for the scroll bar size but how I could calculate it's current vertical position depending on the current item on top of the list box.
My current code looks like this
ListBox struct:
struct MenuListBox {
int PosX;
int PosY;
int Width;
int ItemsVisible; //Items visible at the same time
int CurrentItem;
[code]....
Additional vars in the menu class:
MenuListBox* MenuListBoxes;
int ListBoxCount;
How could i calculate this:
New->CurrentScrollBarPosY = ; ?
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Apr 29, 2013
I'm trying to write a function that takes two linked lists and creates a third one with only the common elements.
It assumes the first list (the caller) has no dups, but it doesn't seem to be working. The program doesn't crash, it just hangs when it is supposed to display L3 (the third list)..everything else runs and is displayed fine.
template <typename T>
LList <T> LList <T>:: common (LList <T> &B)//common fct
{
Node <T> *hunter1 = Head;
[Code]......
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Jul 7, 2014
I need some basic code (not for an assignment) to write an add, delete and locate an node via the singly linked list.
I've looked at: [URL] .....
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Mar 4, 2013
What I have to do is write a small program in C++ to parse the symbols that are used on 5 different lines of text in each position until position 30 is reached on each line. The goal of the parsing program is to interpret the symbols (characters), if there are any per each position, on the 5 lines of text in order to output the actual data that the group of symbols represents.
My question for is this: Is there anything special from a C++ environment that should go in to something like this outside of using standard stuff like the math associated with the search algorithm that has to happen here? The symbols are located in a file, so I know I have to include "iostream" and a few other headers. But outside of header inclusions and the code necessary to iterate and streamline the search and interpretation process, am I missing anything special that I couldn't otherwise find through simple google searches?
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Jun 29, 2013
I have a linked list comprised of chars like so...
Code:
node1 - "p"
node2 - "o"
node3 - "p"
I need a function that will take in three perameters...node *replaceChar(node *head, char key, char *str)Stipulations of this function. head is the head of the list, 'key' and 'str' are guaranteed to contain alphanumeric characters only (A-Z, a-z, and 0-9). str can range from 1 to 1023 characters (inclusively). So if I call this function with these perameters..
Code:
node *head == /*the head of the list to be examined*/
char key == "p"char *str == "dog"The new list will look like this...
node1 - 'd'
node2 - 'o'
node3 - 'g'
node4 - 'o'
node5 - 'd'
node6 - 'o'
node7 - 'g'
All instances of 'p' were replaced with 'dog' I have a toString function which takes in a string and converts it to a linked list and returns the head. So assume that you can call the function on str = "dog" so...
Code:
toString(str) == /*this will return the head to the list made from the str*/
If it's unclear what my question is...I am stumped on how to write the replaceChar function the one that takes in three perameters..
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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 18, 2014
Code:
struct lista* del(struct lista* p, char* path1) {
char model[MAX2];
int len;
char ch;
printf("Type model.
[Code] ..... t
This function should delete each element in the list which is the same as this one typed by user. There are no errors, but function doesn't work. It deletes something, but not this element which should.
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Mar 26, 2013
So I'm trying to make an employee list that holds the information so I can then delete or add from that array. I'm getting some errors regarding overloading function.
#include "employeelist.h"
const Employee & employeelist::operator [](int index) const {
return ( (this->Employees)[index] );
} Employee & employeelist::operator [](int index) {
return ( (this->Employees)[index] );
[Code] .....
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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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May 15, 2013
I need to make the functions using these function prototypes. I am mainly having problems with GetFirst() and SwapData() but how to do it..
Header File with Prototypes
Code:
#ifndef LINKEDLIST_H
#define LINKEDLIST_H
/**
* @file
* This file provided a doubly-linked list implementation capable of storing any arbitrary data.
* The list implementation relies on a chain metaphor: a list is merely a sequence of links
* (ListItems) and there is no separate construct to represent the entire list, each ListItem in it
[Code]....
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