It then recursively applies the same division until it reaches the last node, at that point whole linked list, is reversed. Given a singly linked list, we have to write a code to reverse a linked list using recursion. Given a singly linked list, we have to write a code to reverse a linked list using recursion. Easy. Please use ide.geeksforgeeks.org, generate link and share the link here. We need to reverse the list by changing links between nodes. Example: Input: 1->2->3->4->5->NULL Output: 5->4->3->2->1->NULL Follow up: A linked list can be reversed either iteratively or recursively. Submissions. Reverse Linked List II. brightness_4 In this post, We are going to write a code to reverse a linked list using recursion. This assumption that reverse() works for a subset of our linked list (but not the whole thing) has gotten us pretty far. Then, we recursively call the function on the element to reverse the rest of the linked list. Recursively call reverse for the rest of the linked list. Reverse Linked List Easy 5627 107 Add to List Share Reverse a singly linked list. Recursively Reversing a linked list (A simple implementation) Last Updated: 26-11-2019 Given pointer to the head node of a linked list, the task is to recursively reverse the linked list. acknowledge that you have read and understood our, GATE CS Original Papers and Official Keys, ISRO CS Original Papers and Official Keys, ISRO CS Syllabus for Scientist/Engineer Exam, Stack Data Structure (Introduction and Program), Doubly Linked List | Set 1 (Introduction and Insertion), Find the middle of a given linked list in C and Java, Function to check if a singly linked list is palindrome, Delete a Linked List node at a given position, Reverse a Linked List in groups of given size | Set 1, Program for n'th node from the end of a Linked List, Write a function to get the intersection point of two Linked Lists, Find Length of a Linked List (Iterative and Recursive), Implement a stack using singly linked list, Circular Linked List | Set 1 (Introduction and Applications), Remove duplicates from a sorted linked list, Implementing a Linked List in Java using Class, Add two numbers represented by linked lists | Set 1, Remove duplicates from an unsorted linked list, Search an element in a Linked List (Iterative and Recursive), Write a function to get Nth node in a Linked List, Clone a linked list with next and random pointer | Set 1, Find middle of singly linked list Recursively, Print reverse of a Linked List without actually reversing, Circular Queue | Set 2 (Circular Linked List Implementation), Implementation of Deque using doubly linked list, Decode a string recursively encoded as count followed by substring, Count occurrences of a substring recursively, Recursively remove all adjacent duplicates, XOR Linked List - A Memory Efficient Doubly Linked List | Set 1, XOR Linked List – A Memory Efficient Doubly Linked List | Set 2, Merge a linked list into another linked list at alternate positions, Convert singly linked list into circular linked list, Difference between Singly linked list and Doubly linked list, Convert Singly Linked List to XOR Linked List, Create new linked list from two given linked list with greater element at each node, Check if a linked list is Circular Linked List, Generate Linked List consisting of maximum difference of squares of pairs of nodes from given Linked List, Generating all possible Subsequences using Recursion, Given a linked list which is sorted, how will you insert in sorted way, Write a program to print all permutations of a given string, Given an array A[] and a number x, check for pair in A[] with sum as x, Write a program to reverse digits of a number, Write Interview We have already discussed an iterative solution to reverse linked list in previous post. 3) Link rest to first. We have discussed what is linked list. This question is very important in terms of interviews. struct node* reverse(struct node* head) { // BASE CASE: If no next node (AKA this linked list has length 1), // just return the current HEAD // reverse the linked list starting from the next node. Could you implement both? Attention reader! Now we need to do the rest of the work to have the whole linked list reversed. close, link It divides the list into two parts first node and rest of the list, and then link rest to head in reverse order. If you can clearly identify the steps needed to reverse a linked list, then it shouldn't be very difficult to write some code. edit C program to count number of nodes in a linked list, C program to insert a node at the beginning of a linked list. Below is simple recursive implementation that works by fixing.next pointers of the nodes and finally head pointer of the list. Technology Blog Where You Find Programming Tips and Tricks, Multiply Two Numbers without using * (Multiplication Operator), C program to reverse a singly linked list, Program to Print Middle Element of a Linked List, C Program to Insert a Node at the Beginning of Linked List. Get hold of all the important DSA concepts with the DSA Self Paced Course at a student-friendly price and become industry ready. code. Linked list is a linear collection of data elements, called nodes. Then, then there’s a trick to getting the one front node all the way to the end of the list. store // the address of the head of this reversed list. Link rest to first. Probably the hardest part is accepting the concept that the reverse(&rest, head)does infact reverse the rest. If you are not familiar with the concept of recursion then check my previous tutorial on recursion vs iteration. Copyright 2015 – 2020 – webrewrite.com – All Rights Reserved. We return the pointer of next node to his previous(current) node and then make the previous node as the next node of returned node and then returning the current node. The general recursive algorithm for this is: Divide the list in 2 parts - first node and rest of the list. We use cookies to ensure you have the best browsing experience on our website. Please write to us at contribute@geeksforgeeks.org to report any issue with the above content. This question is very important in terms of interviews. Given a singly linked list, we have to write a code to reverse a linked list using recursion. We need to reverse the list by changing links between nodes. This question is very important in terms of interviews. By using our site, you Companies. Similar Questions. Recursive Method: 1) Divide the list in two parts - first node and rest of the linked list. Reverse a singly linked list. So linked list is a group of nodes which together represent a sequence. Write a c program to reverse a linked list using recursion. Medium. In my previous post, I have. When you get that done, try to write a recursive function to reverse the linked list (btw, don't think of an – Kiril Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below. In my previous post, I have explained C program to reverse a singly linked list. Finally, we reverse and elements to finish the reversal. In this post, we will cover recursive implementation of it. Example: Input: 1->2->3->4->5->NULL Output: 5->4->3->2->1->NULL Follow up: A linked list can be reversed either iteratively or recursively. The time complexity to reverse a linked list using recursion is O(n). See your article appearing on the GeeksforGeeks main page and help other Geeks. Each node consists of two parts a data and a pointer to the next node. Accepted. To understand the concept of linked list, let’s practice some questions related to linked list. In this approach of reversing a linked list by passing a single pointer what we are trying to do is that we are making the previous node of the current node as his next node to reverse the linked list.

reverse a linked list recursively

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