insert node at beginning of circular linked list in c++
C++ program for insert node at beginning of circular linked list. Here problem description and explanation.
// Include header file
#include <iostream>
using namespace std;
// C++ Program
// Insert node at beginning of circular linked list
// Define class of linked list Node
class LinkNode
{
public: int data;
LinkNode *next;
LinkNode(int data, LinkNode *first)
{
this->data = data;
this->next = first;
}
};
class CircularLinkedList
{
public: LinkNode *head;
// Class constructors
CircularLinkedList()
{
this->head = nullptr;
}
// Insert node at begining of circular linked list
void insert(int value)
{
// Create a node
LinkNode *node = new LinkNode(value, this->head);
if (this->head == nullptr)
{
// First node of linked list
this->head = node;
node->next = this->head;
}
else
{
LinkNode *temp = this->head;
// Find the last node
while (temp->next != this->head)
{
// Visit to next node
temp = temp->next;
}
// Add node
temp->next = node;
// make new head node
this->head = node;
}
}
// Display node element of circular linked list
void display()
{
if (this->head == nullptr)
{
cout << "Empty Linked List" << endl;
}
else
{
cout << " Linked List Element : " << endl;
// Get first node
LinkNode *temp = this->head;
// iterate linked list
while (temp != nullptr)
{
// Display node
cout << " " << temp->data;
// Visit to next node
temp = temp->next;
if (temp == this->head)
{
// Stop iteration
return;
}
}
}
}
};
int main()
{
CircularLinkedList *task = new CircularLinkedList();
// Add following linked list nodes
task->insert(8);
task->insert(7);
task->insert(6);
task->insert(5);
task->insert(4);
task->insert(3);
task->insert(2);
task->insert(1);
// Display node
task->display();
return 0;
}
Output
Linked List Element :
1 2 3 4 5 6 7 8
Please share your knowledge to improve code and content standard. Also submit your doubts, and test case. We improve by your feedback. We will try to resolve your query as soon as possible.
New Comment