data structures basic interview questions

This is one topic, which is always asked in any programming interview, doesn't matter if you are C, C++, or Java developer, basic knowledge of data structure like an array, linked list, stack, queue, the tree is must to clear any programming interview. That's all on this list of data structure interview questions and answers. It's an interactive course where you can try out this pattern in the browser itself. If you need a course, I highly recommend Grokking the Coding Interview: Patterns for Coding Questions course on Educative.

If you are preparing for interviews then I also suggest you learn some essential coding patterns like two points, fast and slow pointers, sliding window, and merge interval which can help you to solve many frequently asked coding problems. On the other hand, the doubly linked list maintains two pointers, towards the next and previous node, which allows you to navigate in both directions in any linked list. In a singly linked list, a node only points towards the next node, and there is no pointer to the previous node, which means you can not traverse back on a singly linked list. The main difference between the singly linked list and the doubly linked list is the ability to traverse. This is another classical interview question on the data structure, mostly asked on telephonic rounds. This way you can get the best of both worlds, you will learn data structure and algorithms and also prepare for the interview. In such cases, it's better to revise fundamentals by joining a comprehensive online course like Data Structures and Algorithms: Deep Dive Using Java. There is no point in attempting these questions if you don't know how to access elements from an array or linked list or can't even code them using the programming language of your choice. Let us know if you have any interesting questions from data structures and algorithms, which you faced during any Java interviews.īy the way, you also need some understanding of the basic data structure before solving these questions. In this tutorial, we will see a couple of data structure questions answers from these topics. You can also expect questions from the stack, queue, array, linked list, tree, graph, and hash table are most common in any data structure interview. Similarly, finding duplicates in an array, finding missing numbers, sorting arrays are very popular. The li nked list and array are favorite topics in any data structure interview, questions like reversing a linked list, traversing a linked list, or deleting nodes from the linked list, which involves algorithm and data structures that are quite common. Similarly, while going on questions from data structure you may get some programming exercise as well e. Any lis t of programming job interview questions is incomplete without questions from data structures and algorithms. Though trees and graphs are on the tougher side, I still see programmers get familiar will all these.

Since data structures are core programming concepts, it's mandatory for all programmers, to know basic data structures like the stack, linked list, queue, array, tree, and graph.

Data structures and algorithm questions are an important part of any programming job interview, be it a Java interview, a C++ interview, or any other programming language.

Data structures basic interview questions