Reference : We can divide the list into chunks of size square root(len(list)). By using our site, you Time Complexity: O(n) Can we reverse a linked list in less than O(n)? Carriage return (“r”) : It commands a printer (cursor or the display of a system console), to move the position of the cursor to the first position on the same line. The linked List will be: Attention reader! brightness_4 Here is the source code of the C Program to Print linked list in reverse order using recursion. Reverse a circular linked list. 1. Data Structures and Algorithms – Self Paced Course, Ad-Free Experience – GeeksforGeeks Premium, We use cookies to ensure you have the best browsing experience on our website. STEP 2: When you reach null, return. Swapping data can be costly compared to pointers if size of data item(s) is more. Can we reverse a linked list in less than O(n)? while (curr != NULL) {. Write a Python program to print a given doubly linked list in reverse order. Trick : Idea behind printing a list in reverse order without any recursive function or loop is to use Carriage return (“r”). Then we can create a temp array of the same size which will store the heads of each chunk of root(n). 29, Oct 17. The function also visits every node of linked list only once. See complete series of videos on Linked List here:http://www.youtube.com/watch?v=NobHlGUjV3g&list=PL2_aWCzGMAwI3W_JlcBbtYTwiQSsOTa6P&index=3In this … code, Input and Output Illustration : Note that the question is only about printing the reverse. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. Now, one by one, we can start printing the nodes in reverse order using a stack starting from the last chunk. Get hold of all the important DSA concepts with the DSA Self Paced Course at a student-friendly price and become industry ready. swap(curr); // update the previous node before moving to the next node. STEP 3: While returning from each recursive call, Print the Node data and you are done. NOTE:Above program may not work on online compiler because they do not support anything like carriage return on their console. Algorithm to reverse a doubly linked list. Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above. This article is contributed by Shivam Pradhan (anuj_charm). Time Complexity: O(n) We can also swap data instead of pointers to reverse the Doubly Linked List. Input : 6 5 4 3 2 1 For this, we should have knowledge of length of list. Print in Reverse. stackoverflow/Carriage return. An interesting method to print reverse of a linked list. generate link and share the link here. close, link Write a C program to create a doubly linked list and reverse the linked list. Now, we should print n-1 blanck space and then print 1st element then “r”, futher again n … 1st Iteration _ _ _ _ _ 6 Contribute your code (and comments) through Disqus. This means instead of setting the next pointer of the last node to null, it is linked to the first node. This tutorial will explain more about circular linked list which is a collection of nodes in which the nodes are connected to each other to form a circle. How to reverse the doubly linked list in C programming. brightness_4 Don’t stop learning now. PrintReverseLinkedList Class: PrintReverseLinkedList class is responsible for printing single linked list in reverse order. 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), Delete a Linked List node at a given position, Function to check if a singly linked list is palindrome, Implement a stack using singly linked list, Find Length of a Linked List (Iterative and Recursive), Program for n'th node from the end of a Linked List, Reverse a Linked List in groups of given size | Set 1, Write a function to get the intersection point of two Linked Lists, Implementing a Linked List in Java using Class, Circular Linked List | Set 1 (Introduction and Applications), Search an element in a Linked List (Iterative and Recursive), Remove duplicates from a sorted linked list, Add two numbers represented by linked lists | Set 1, Remove duplicates from an unsorted linked list, Write a function to get Nth node in a Linked List, Swap nodes in a linked list without swapping data, Iterative and Recursive Methods to Reverse, Shuffle 2n integers in format {a1, b1, a2, b2, a3, b3, ......, an, bn} without using extra space, Count words that appear exactly two times in an array of words, Given a linked list which is sorted, how will you insert in sorted way, Insert a node at a specific position in a linked list, Add two numbers represented by linked lists | Set 2, Clone a linked list with next and random pointer | Set 1, Applications of linked list data structure, Write Interview Don’t stop learning now. One way of printing the list backward is to first reverse the list, then print it in forward order and then reverse it back again to restore the original list. C Program to print linked list nodes in reverse order. For example, if the given linked list is 1->2->3->4, then output should be 4->3->2->1. But with home work I suspect they don't have much choice. By iterating through it, you can get the elements in the reverse order. An interesting method to print reverse of a linked list, Iteratively Reverse a linked list using only 2 pointers (An Interesting Method), XOR Linked List - Reverse a Linked List in groups of given size, Print Doubly Linked list in Reverse Order, Print the last k nodes of the linked list in reverse order | Recursive approach, Print reverse of a Linked List without actually reversing, Print the last k nodes of the linked list in reverse order | Iterative Approaches, Print reverse of a Linked List without extra space and modifications, XOR Linked List - A Memory Efficient Doubly Linked List | Set 1, 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, 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, XOR Linked List - Pairwise swap elements of a given linked list, XOR linked list- Remove first node of the linked list, Convert Singly Linked List to XOR Linked List, XOR Linked List – A Memory Efficient Doubly Linked List | Set 2, Reverse alternate K nodes in a Singly Linked List, Given a linked list, reverse alternate nodes and append at the end, Merge two sorted linked lists such that merged list is in reverse order. Please use ide.geeksforgeeks.org, This method checks whether next node to current is head which implies that, current is pointing to tail, then it will print the data of the tail node. Python Linked List: Exercise-11 with Solution. Same principle can be applied by using recursion. Doubly circular link list or Circular doubly link list ; Program to sort a linked list by readjusting the links; Program to print a Single Ended Linked List in Original & Reverse order and sort it in Ascending & Decending Order; Prolog program to concatenate two lists, an element is a member of a given list or not, reverse a list and delete a list Find code solutions to questions for lab practicals and assignments. Reverse a Doubly linked list using recursion. Python Code: Write a C program to create a singly linked list of n nodes and reverse the order of nodes of the given linked list. I'm not sure if storing the data in an array and looping through it in reverse and printing was the right approach since this challenge was to use linked lists, but I didn't know how else to do it: You are given the pointer to the head node of a linked list and you need to print all its elements in reverse order from tail to head, one element per line. How to reverse a singly linked list in C. Algorithm and steps to reverse a singly linked list. Merge two sorted linked lists such that merged list is in reverse order. Iterative Approach to Reverse a Linked List. Current will point to the next node in the list in each iteration. Please use ide.geeksforgeeks.org, Attention reader! The recursive implementation works by fixing `.next` pointers of the list's nodes and finally the head pointer. We can print linked list as it is (in the given order) without using extra storage or extra thinking. Get hold of all the important DSA concepts with the DSA Self Paced Course at a student-friendly price and become industry ready. close, link edit Examples: INPUT: Reverse a Linked List according to its Size. struct Node* curr = *headRef; // traverse the list. We can just use loops but if we are asked to write a program to print the linked list without actually reversing it, we can not do it by just using loops. 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, Program for n’th node from the end of a Linked List, Write a function that counts the number of times a given int occurs in a Linked List, Add two numbers represented by linked lists | Set 1, Add two numbers represented by linked lists | Set 2, Add Two Numbers Represented by Linked Lists | Set 3, Reverse a Linked List in groups of given size | Set 1, Reverse a Linked List in groups of given size | Set 2, Alternate Odd and Even Nodes in a Singly Linked List, Alternating split of a given Singly Linked List | Set 1, Stack Data Structure (Introduction and Program), Doubly Linked List | Set 1 (Introduction and Insertion), Implement a stack using singly linked list, Implementing a Linked List in Java using Class, Delete a Linked List node at a given position, Find Length of a Linked List (Iterative and Recursive), Function to check if a singly linked list is palindrome, Search an element in a Linked List (Iterative and Recursive), Circular Linked List | Set 1 (Introduction and Applications), Write a function to get Nth node in a Linked List, Write Interview
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