C++ Program to Count rotations in sorted and rotated linked list

// Program for count number of rotations in
// sorted linked list.
#include <bits/stdc++.h>
using namespace std;
/* Linked list node */
struct Node {
    int data;
    struct Node* next;
};

// Function that count number of
// rotation in singly linked list.
int countRotation(struct Node* head)
{
    // declare count variable and assign it 1.
    int count = 0;

    // declare a min variable and assign to
    // data of head node.
    int min = head->data;

    // check that while head not equal to NULL.
    while (head != NULL) {

        // if min value is greater then head->data
        // then it breaks the while loop and
        // return the value of count.
        if (min > head->data)
            break;

        count++;

        // head assign the next value of head.
        head = head->next;
    }
    return count;
}

// Function to push element in linked list.
void push(struct Node** head, int data)
{
    // Allocate dynamic memory for newNode.
    struct Node* newNode = new Node;

    // Assign the data into newNode.
    newNode->data = data;

    // newNode->next assign the address of
    // head node.
    newNode->next = (*head);

    // newNode become the headNode.
    (*head) = newNode;
}

// Display linked list.
void printList(struct Node* node)
{
    while (node != NULL) {
        printf("%d ", node->data);
        node = node->next;
    }
}

// Driver functions
int main()
{
    // Create a node and initialize with NULL
    struct Node* head = NULL;

    // push() insert node in linked list.
    // 15 -> 18 -> 5 -> 8 -> 11 -> 12
    push(&head, 12);
    push(&head, 11);
    push(&head, 8);
    push(&head, 5);
    push(&head, 18);
    push(&head, 15);

    printList(head);
    cout << endl;
    cout << "Linked list rotated elements: ";

    // Function call countRotation()
    cout << countRotation(head) << endl;

    return 0;
}