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  1. // Reverse a linked list by Iterative Method
  2. #include <iostream>
  3. using namespace std;
  4. struct Node {
  5.     int data;
  6.     struct Node* next;
  7.     Node(int data)
  8.     {
  9.         this->data = data;
  10.         next = NULL;
  11.     }
  12. };
  13. struct LinkedList {
  14.     Node* head;
  15.     LinkedList() { head = NULL; }
  16.     void reverse()
  17.     {
  18.         Node* current = head;
  19.         Node *prev = NULL, *next = NULL;
  20.         while (current != NULL) {
  21.             next = current->next;
  22.             current->next = prev;
  23.             prev = current;
  24.             current = next;
  25.         }
  26.         head = prev;
  27.     }
  28.     void print()
  29.     {
  30.         struct Node* temp = head;
  31.         while (temp != NULL) {
  32.             cout << temp->data << " ";
  33.             temp = temp->next;
  34.         }
  35.     }
  36.     void push(int data)
  37.     {
  38.         Node* temp = new Node(data);
  39.         temp->next = head;
  40.         head = temp;
  41.     }
  42. };
  43. int main()
  44. {
  45.     LinkedList ll;
  46.     ll.push(345);
  47.     ll.push(89);
  48.     ll.push(77);
  49.     ll.push(65);
  50.     cout << "Given linked list\n";
  51.     ll.print();
  52.     ll.reverse();
  53.     cout << "\nReversed linked list \n";
  54.     ll.print();
  55.     return 0;
  56. }
  57. // mam iam just tried these programs as per the w3schools if i revised the previoous topics i can make it in efective way please provide the recording of week 2-2 session mam
  58.  
Success #stdin #stdout 0s 5264KB
comments (?)
stdin 
Standard input is empty
stdout 
Given linked list
65 77 89 345 
Reversed linked list 
345 89 77 65
https://ideone.com/aSnDdd
language:
C++14 (gcc 8.3)
created:
19 days ago
visibility:
public

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