Remove Duplicates From Unsorted Linked List Hackerrank, If the value is not present in the HashSet then push the value in HashSet append the nodes in the new list , otherwise skip the value as it is the duplicate value. Intuitions, example walk through, and complexity analysis. This repository contains the challenges of algorithms and data structure of the site HackerRank. Can you solve this real interview question? Remove Duplicates from Sorted List II - Given the head of a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original list. Jul 23, 2025 · The idea is to use two loops to remove duplicates from an unsorted linked list. Jun 27, 2021 · Level Medium Description Given the head of a linked list, find all the values that appear more than once in the list and delete the nodes that have any of those values. The first loop goes through each node one by one. Can you solve this real interview question? Remove Duplicates from Sorted List - Given the head of a sorted linked list, delete all duplicates such that each element appears only once. Contribute to srgnk/HackerRank development by creating an account on GitHub. We traverse again, and if a node's value has a frequency of 1, we attach it to the new list; otherwise, we skip it. After obtaining the frequency of every value, we use a dummy node to start building the new linked list. Example 1: Input: N = 4 value[] = {5,2,2,4} Output: 5 2 4 Explanation:Given linked list elements are 5->2->2->4, in which 2 is repeated only. Can you solve this real interview question? Remove Duplicates From an Unsorted Linked List - Level up your coding skills and quickly land a job. 1836. HackerRank-Practice / Removing duplicates in unsorted linkedlist (condensed list). When a value appears in multiple nodes, the node which appeared first should be kept, all other duplicates are to be removed. Note: Try not to use extra space. c Cannot retrieve latest commit at this time. Mar 26, 2025 · The idea is to traverse the linked list and for each node, if the next node has the same data, skip and delete the duplicate node. This is the best place to expand your knowledge and get prepared for your next interview. Remove Duplicates From an Unsorted Linked List Given the head of a linked list, find all the values that appear more than once in the list and delete the nodes that have any of those values. If a duplicate is found, it removes it by changing the links. Mar 26, 2025 · [Naive Approach] Remove duplicates using HashSet – O (n) Time and O (n) Space: The idea is to traverse the linked list and check if the value is present in HashSet or not. Given a singly linked list. Example 1: Input: head = [1,2,3,2] Output: [1,3] Explanation: 2 appears twice in the linked list, so all 2’s should be deleted. Follow the steps below to solve the problem: HackerRank-Practice / Removing duplicates in unsorted linkedlist (condensed list). The relative order of the elements should be kept the same. It will also work to remove nodes in an unsorted linked list. Jul 23, 2025 · The idea is to use two loops to remove duplicates from an unsorted linked list. Jul 22, 2023 · The task is to remove duplicate elements from this unsorted Linked List. In-depth solution and explanation for LeetCode 1836. - Hackerrank-Problem-Solving/Data Structures/Linked Lists/delete-duplicate-value-nodes-from-a-sorted-linked-list. Remove Duplicates From an Unsorted Linked List 🔒 - LeetCode Wiki Hash Table Linked List. Given an integer array nums sorted in non-decreasing order, remove the duplicates in-place such that each unique element appears only once. Remove duplicate values from an unsorted singly linked list- Linked list interview questions Bangla. Given a linked list whose nodes have data in ascending order, delete some nodes so that no value occurs more than once. Return the linked list after the deletions. Follow the steps below to solve the problem: Initialize an Jul 31, 2024 · In this HackerRank Delete duplicate-value nodes from a sorted linked list problem, have given pointers of the head of a sorted linked list, where the values in the nodes are ascending order. Return the linked list sorted as well. py at master · Murillo/Hackerrank-Problem-Solving Given an unsorted linked list. and if the given pointer is null then the list is empty. then we need to delete the nodes that have duplicate values and return the sorted list with each distinct value in the list. chapter 2 (Linked List) remove duplicate from unsorted linked list find the kth to the last from a singly linked list (needs improvement) delete the middle element from linked list (needs improvement) partition list add numbers detect the begining of the loop check whether a linked list is a palindrome (needs improvement) Aug 16, 2020 · The algorithm in this HackerRank problem written in C and C++ makes it easy to remove nodes from a sorted linked list. When a value appears in multiple nodes, the node which appeared first should be kept, all others duplicates are to be removed. The task is to remove duplicate elements from this unsorted Linked List. The task is to remove duplicates (nodes with duplicate values) from the given list (if it exists). Example 1: Input: head = [1,2,3,2] Output: [1,3] Solutions to HackerRank problems. Solution We first traverse the linked list to count the occurrence of each node's value using a hash table. Check the code from GitHub:more Given a linked list whose nodes have data in ascending order, delete some nodes so that no value occurs more than once. Examples: Input: LinkedList: 2->2->4->5 O Code 360 by Coding Ninjas Almost there just a few more seconds! Mar 27, 2024 · This article will discuss the Remove duplicates from an unsorted linked list problem and various ways to solve this problem, from the brute force approach to the efficient approach. For each node, the second loop checks all the nodes that come after it to see if there are any duplicates. Better than official and forum solutions. Remove Duplicates From an Unsorted Linked List in Python, Java, C++ and more. The nodes are arranged in a sorted way. Question Name : Remove duplicates in an unsorted linked list Instagram Link : / coding_crane YouTube Link : / @codingcrane #viral #trending #1k #1ksubscribers #subscribe #subscribers # Can you solve this real interview question? Remove Duplicates From an Unsorted Linked List - Level up your coding skills and quickly land a job. wqyxl, eogh, lf72, fcx2v, fu7q9, amsimi, jm3gmt, aqxt, n54a, phom,