How do you find the third node from the end in a singly linked list? ( solution ).How do you check if a given linked list contains a cycle? How do you find the starting node of the cycle? ( solution ).How do you find the middle element of a singly linked list in one pass? ( solution ).Once you have solved the problem or stuck after trying, you can look at the solution and learn from them. I have linked to the solution wherever possible but I suggest you first try to solve the problem on your own, that will benefit you because you will think and learn. Without wasting any more of your time, here are some of the most common and popular linked list interview questions from Coding interviews. Introduction to Algorithms 20+ Frequently asked linked list Problems from Coding Interviews It’s one of the most comprehensive books on Data Structure and Algorithms. Data Structures in Java: An Interview Refresher to refresh important Data Structure and algorithms concepts in Java.Īnd, if you prefer books, there is no better than Introduction to Algorithmsby Thomas H.Mastering Data Structures & Algorithms using C and C++ for those who are good at C/C++.JavaScript Algorithms and Data Structures Masterclass by Colt Steele for JavaScript programmers.Algorithms and Data Structures in Python for those who love Python.Data Structures and Algorithms: Deep Dive Using Java for Java developers.If you need recommendations, following are some of my the tried and tested resources to learn Data Structure and Algorithms in-depth:
In that case, I suggest you to first go through a good data structure and algorithm courses or book to revise the concept. It’s very similar to recursion and actually, that smallest sub-problem you can solve becomes the base case for recursive solutions.ītw, there is no point in solving these linked list based coding problems if you don’t have basic knowledge of data structure or you have not to refresh them in recent times.
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They are also solved using divide-and-conquer techniques, which breaks the problem into sub-problems until you can solve them.įor example, to reverse a linked list, you break linked list until you have got just one node, at that point, you know how to reverse that linked list of one node, it’s nothing but the same node. If you take one node from a linked list, the remaining data structure is still a linked list, and because of that, many linked list problems have simpler recursive solutions than iterative ones. In order to solve linked list-based questions, a good knowledge of recursion is important, because a linked list is a recursive data structure. How to solve linked list based Coding Problems? It also comes in varieties like a singly linked list, which allows you to traverse in one direction (forward or reverse) a doubly-linked list, which allows you to traverse in both directions (forward and backward) and finally, the circular linked list, which forms a circle. This article provides more information on the difference between an array and linked list data structures.
However, unlike the array, it doesn’t store them in contiguous locations instead, they are scattered everywhere in memory, which is connected to each other using nodes.Ī linked list is nothing but a list of nodes where each node contains the value stored and the address of the next node.īecause of this structure, it’s easy to add and remove elements in a linked list, as you just need to change the link instead of creating the array, but the search is difficult and often requires O(n) time to find an element in the singly linked list. Similar to the array, it is also a linear data structure and stores elements in a linear fashion. What is a linked list data structure?Ī linked list is another common data structure that complements the array data structure. It will also make you a better programmer because you develop logic and coding sense while solving these problems which goes a long way in your programming career. In the past, I have shared some data structure questions, string algorithms problems, and some useful online courses to prepare for Programming Job Interview and today I am going to share a list of frequently asked linked list problems from coding interviews.ĭata Structures are one of the most important parts of any programming Job interview and often the reason to select or reject a candidate, that’s why practicing these data structure based problems will give you an edge over your competitor. Hello all, I have been sharing a lot of coding interview questions for Programmers who are actively looking for Job, particularly for beginners and computer engineers who have just graduated and has no real job experience.
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