![]() The search will start in the middle of the list and then determine from there whether to continue the search at the top end or the bottom end." Where should you use data structures? Answer confidently and provide a real-world example applicable to the company with whom you are interviewing if possible.Įxample: "You can use the binary search algorithm with a list of ordered and sorted elements. ![]() Hierarchical data structures organize data in a multi-level configuration." When should you apply a binary search?Īn interviewer will ask a question like this one to ascertain your decision-making skills. Linear data structures organize data in a single-level sequence. This question will demonstrate your knowledge of basic data structure, but it will also show the interviewer if you can explain programming terms and ideas clearly.Įxample: "Linear data structures and hierarchical data structures both describe the relationships between pieces of data, but they differ in how the data interacts. You just change the list rather than creating the array." Explain the difference between a linear data structure and a hierarchical data structure It will also demonstrate your ability to problem solve, prioritize and make quick decisions.Įxample: "The best data structure to use if you want to move the elements of a connected list around is the linked-list structure. Your answer to this question will show the interviewer that you understand multiple forms of data structures. What sort of data structure allows you to easily manipulate elements in a connected list? Related: 125 Common Interview Questions and Answers (With Tips) Interview questions with sample answersīelow we have gathered some common data structures interview questions with explanations and example answers. Which algorithm for sorting is the fastest? Would you describe linked lists as binary or non-binary data structures? Why? How do you use a given array to perform a binary search? How can you find duplicate characters in a string? What are the steps to reverse a linked list? What is the process for finding the largest number and the smallest number in an unsorted integer array? How do you trade two integers without the use of a temporary variable? Which data structure should you choose to implement LRU cache? Interviewers ask these questions not only to see if you understand data structures but also how you approach critical thinking and problem-solving. Related: How to Sell Yourself in an Interview In-depth questions Will you able to explain data structures to colleagues unfamiliar with programming? How did your last position prepare you for this role?ĭid your last position involve data structures? These questions will provide the interviewer with information about your specific knowledge and skills so that they know whether you can perform the job. Questions about experience and background How many queues do you need to execute a priority queue? What is the difference between a PUSH and a POP? What is the difference between NULL and VOID? Your answers to these general data structures questions will show the interviewer that you understand how data structures work. ![]() Related: 7 Items to Bring to a Job Interview General questions
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