O’zbekiston Respublikasi Axborot Texnologiyalari va Kommunikatsiyalarini rivojlantirish Vazirligi Muhammad Al-Xorazmiy nomidagi Toshkent Axborot Texnologiyalari Universiteti

using namespace std;
// A linked list node
struct Node
{
int data;
struct Node *next;
};
//insert a new node in front of the list
void push(struct Node** head, int node_data)
{
/* 1. create and allocate node */
struct Node* newNode = new Node;
/* 2. assign data to node */
newNode->data = node_data;
/* 3. set next of new node as head */
newNode->next = (*head);
/* 4. move the head to point to the new node */
(*head) = newNode;
}
//insert new node after a given node
void insertAfter(struct Node* prev_node, int node_data)
{
/*1. check if the given prev_node is NULL */
if (prev_node == NULL)
{
cout<<"the given previous node is required,cannot be NULL"; return; }
/* 2. create and allocate new node */
struct Node* newNode =new Node;
/* 3. assign data to the node */
newNode->data = node_data;
/* 4. Make next of new node as next of prev_node */
newNode->next = prev_node->next;
/* 5. move the next of prev_node as new_node */
prev_node->next = newNode;
}
/* insert new node at the end of the linked list */
void append(struct Node** head, int node_data)
{
/* 1. create and allocate node */
struct Node* newNode = new Node;
struct Node *last = *head; /* used in step 5*/
/* 2. assign data to the node */
newNode->data = node_data;
/* 3. set next pointer of new node to null as its the last node*/
newNode->next = NULL;
/* 4. if list is empty, new node becomes first node */
if (*head == NULL)
{
*head = newNode;
return;
}
/* 5. Else traverse till the last node */
while (last->next != NULL)
last = last->next;
/* 6. Change the next of last node */
last->next = newNode;