#include <iostream>
using namespace std;
struct Node {
int data;
Node *next;
};
Node *head = NULL;
Node* createNewNode(int d){
Node *temp = new Node();
temp->data = d;
temp->next = NULL;
return temp;
}
void addNodeAtBegin(int d){
if(head == NULL){
head = createNewNode(d);
return;
}
Node* temp1 = createNewNode(d);
temp1->next = head;
head = temp1;
}
void addNodeAtEnd(int d){
if(head == NULL){
head = createNewNode(d);
return;
}
Node* temp3 = head;
while(temp3->next != NULL){
temp3 = temp3->next;
}
Node* temp4 = createNewNode(d);
temp3->next = temp4;
}
void print(){
Node* temp2 = head;
while(temp2->next !=NULL)
{
cout<<temp2->data<<" ";
temp2 = temp2->next;
}
cout<<temp2->data;
cout<<"\n";
}
bool search(int d){
Node *temp = head;
while(temp->next != NULL){
if(temp->data == d){
return true;
break;
}
temp = temp->next;
}
if(temp->data == d)
return true;
else return false;
}
void del(int n){
Node *temp = head;
if(n==1){
head = temp->next;
delete(temp);
return;
}
for(int i=0 ; i<n-2; i++){
temp = temp->next;
}
Node * temp1 = temp->next;
temp->next = temp1->next;
delete (temp1);
}
void length(){
Node* temp = head;
int c =1;
while(temp->next != NULL){
temp = temp->next;
c++;
}
cout<<c;
}
void get(int n){
Node *temp = head;
for(int i=0; i<n-1 ; i++){
temp = temp -> next;
}
cout<<temp->data;
}
int max(){
int max = head->data;
Node *temp = head;
while(temp->next != NULL){
temp = temp->next;
if(temp->data > max){
max = temp->data;
}
}
return max;
}
int min(){
int min = head->data;
Node *temp = head;
while(temp->next != NULL){
temp = temp->next;
if(temp->data < min){
min = temp->data;
}
}
return min;
}
void convertToCircular(){
Node *temp = head;
while(temp->next != NULL){
temp = temp->next;
}
temp->next = head;
}
int countNodesInCircularLinkedList(){
Node *temp = head;
int c =1;
while(temp!=NULL){
c++;
temp=temp->next;
if(temp->next == head){
break;
}
}
return c;
}
void exchange(){
Node *temp = head;
Node* prev;
while(temp->next != NULL){
prev = temp;
temp = temp->next;
}
temp->next = head->next;
prev->next = head;
head->next = NULL;
head = temp;
}
int main() {
addNodeAtBegin(3);
addNodeAtBegin(2);
addNodeAtBegin(5);
addNodeAtBegin(6);
addNodeAtBegin(8);
print();
exchange();
print();
convertToCircular();
del(5);
cout<<countNodesInCircularLinkedList();
}
