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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  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.  
  14. struct LinkedList {
  15.     Node* head;
  16.     LinkedList() { head = NULL; }
  17.  
  18.     void reverse()
  19.     {
  20.         // Initialize current, previous and next pointers
  21.         Node* current = head;
  22.         Node *prev = NULL, *next = NULL;
  23.  
  24.         while (current != NULL) {
  25.             // Store next
  26.             next = current->next;
  27.             // Reverse current node's pointer
  28.             current->next = prev;
  29.             // Move pointers one position ahead.
  30.             prev = current;
  31.             current = next;
  32.         }
  33.         head = prev;
  34.     }
  35.  
  36.     void print()
  37.     {
  38.         struct Node* temp = head;
  39.         while (temp != NULL) {
  40.             cout << temp->data << " ";
  41.             temp = temp->next;
  42.         }
  43.     }
  44.  
  45.     void push(int data)
  46.     {
  47.         Node* temp = new Node(data);
  48.         temp->next = head;
  49.         head = temp;
  50.     }
  51. };
  52.  
  53.  
  54. int main()
  55. {
  56.     LinkedList l1;
  57.     l1.push(5);
  58.     l1.push(16);
  59.     l1.push(24);
  60.     l1.push(59);
  61.  
  62.     cout << "Given linked list\n";
  63.     l1.print();
  64.  
  65.     l1.reverse();
  66.  
  67.     cout << "\nReversed linked list \n";
  68.     l1.print();
  69.     return 0;
  70. }
  71.  
Success #stdin #stdout 0.01s 5276KB
comments (?)
stdin 
Standard input is empty
stdout 
Given linked list
59 24 16 5 
Reversed linked list 
5 16 24 59
https://ideone.com/wQXDuX
language:
C++ (gcc 8.3)
created:
19 days ago
visibility:
public

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