In this program, we are going to share an Iterative C++ program to reverse a linked list. If you are a beginner and want to start learning the C++ programming, then keep your close attention in this tutorial as I am going to share a program for an Iterative C++ program to reverse a linked list with the output.
Copy the below C++ program and execute it with the help of GCC compiler. At the end of this program, We have shared the output of this program.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 | #include<iostream> using namespace std; struct Node { int data; struct Node* next; Node (int data) { this->data = data; next = NULL; } }; struct LinkedList { Node *head; LinkedList() { head = NULL; } /* Function to reverse the linked list */ void reverse() { // Initialize current, previous and // next pointers Node *current = head; Node *prev = NULL, *next = NULL; while (current != NULL) { // Store next next = current->next; // Reverse current node's pointer current->next = prev; // Move pointers one position ahead. prev = current; current = next; } head = prev; } /* Function to print linked list */ void print() { struct Node *temp = head; while (temp != NULL) { cout << temp->data << " "; temp = temp->next; } } void push(int data) { Node *temp = new Node(data); temp->next = head; head = temp; } }; /* Driver program to test above function*/ int main() { /* Start with the empty list */ LinkedList ll; ll.push(20); ll.push(4); ll.push(15); ll.push(85); cout << "Given linked list\n"; ll.print(); ll.reverse(); cout << "\nReversed Linked list \n"; ll.print(); return 0; } |
Given linked list
85 15 4 20
Reversed Linked list
20 4 15 85
