LeetCode 21: Merge Two Sorted Lists (Most Asked) | DSA Linked List Series скачать в хорошем качестве

LeetCode 21: Merge Two Sorted Lists (Most Asked) | DSA Linked List Series

https://forms.gle/sLU9bBs5basP3hx86 If you’re interested in learning Data Structures and Algorithms (DSA) directly from me, please fill out this form. Our team will reach out to you with further details. Practise Link: https://leetcode.com/problems/merge-t... In this video, we learn how to merge two sorted linked lists into a single sorted linked list. This is a classic linked list interview problem, and I’ve explained it using two different approaches — from the brute force idea to the optimal pointer-based solution. What this video covers 1. Brute Force Approach Copy both linked lists into a temporary array Sort the array using merge sort or quick sort Build a new linked list from the sorted array Time complexity: O(n + m · log(n + m)) Space complexity: O(n + m) 2. Optimal Pointer Manipulation Approach No extra space required Use two pointers to merge the lists in a sorted manner Operates in O(n + m) time and O(1) extra space Fully explained with visuals and step-by-step logic Why this matters This technique is widely used in DSA and is an essential foundation for problems like merge sort on linked lists, removing duplicates, and merging k sorted lists. Timeline Brute force idea and complexity Pointer-based efficient solution Pseudo Code Playlists DSA Playlist:    • DSA Problems   LinkedList Playlist:    • LinkedList Problem Solving Series   Code 👉 Solution: Pinned on the comments #LinkedList #MergeSortedLists #LinkedListMerge #DSA #DataStructures #Algorithms #CodingInterview #TechInterview #JavaProgramming #PointerManipulation #BruteForce #OptimizedSolution #TwoPointers #MergeOperation #LeetCode #GeeksforGeeks #CodingTutorial #ProblemSolving #ComputerScience #LearnDSA #CodeWithMe