![]() Explain the binary search algorithm.īinary search algorithm is an efficient and popular searching algorithm. We commonly express the time complexity of algorithms through the big O notation.” 6. We estimate this value by counting the elementary operations performed as a part of the algorithm. This is among the most basic questions asked with respect to algorithms to assess your ability and knowledge to enhance existing systems.Įxample: “Time-complexity of an algorithm denotes its computational complexity and the amount of computer time to run a particular algorithm. Explain time-complexity with respect to algorithms.Įffective programmers can assess the time complexity of algorithms, and help plan resources better, process and achieve efficient results. The benefits of Quick Sort are that it does not require extra memory while sorting long lists, occupies less space and is cache-friendly. They are the pivot element, elements less than the pivot element and elements greater than the pivot element. ![]() The algorithm segregates a list into three parts. It works on the principle of divide and conquer or partition exchange sort. This is a common question in interviews to assess how well you understand this basic sorting algorithm.Įxample: “ We use Quick Sort to sort queries and lists quickly. Quick Sort is a sorting algorithm that is quite popular in practice. Explain the Quick Sort algorithm and its benefits. Related: What Is the Tree Data Structure? (With Advantages And Types) 4. In accordance to the Dijkstra's shortest path algorithm, the shortest path tree avoids edges with larger weight.” ![]() Certain congested roads are challenging to navigate and resultantly have a large weight. For example, consider you want to travel from point A to point B in the shortest way possible. Using the algorithm, we make a tree of the shortest paths which begin from the starting vertex to all the other nodes present in the graph. In order to answer this question effectively, provide a comprehensive and concise answer with a few real-life examples to show your understanding.Įxample: “ The Dijkstra's shortest path algorithm finds the shortest path from starting node to target node in weighted graphs. Interviewers ask this question to determine your understanding of this algorithm pattern. Explain Dijkstra's shortest path algorithm. Binary search, quick sort and merge sort are some examples for divide-and-conquer algorithms.” 3. The last step puts together all the smaller solutions to obtain the solution to the original problem. The first step divides the original problems into subproblems and the conquer step solves each subproblem individually. The three steps in this approach are divide, conquer and combine. Asking this question helps the interviewer assess your approach to solving problems using this strategy.Įxample: “ The divide-and-conquer algorithm approach involves breaking the original problem into minor problems, solving each problem and putting all solutions together into a single efficient solution. To ace your interview for a coding job, it is integral to understand divide and conquer. Explain the divide-and-conquer technique in algorithms.ĭivide and conquer algorithms can help one solve difficult computational problems. Related: What Is Software Engineering? Complete Guide 2. An algorithm can help break complex problems down into a series of logical steps using which programmers can convert it to a program.” Efficient algorithms can improve the efficiency technique and also help reduce design costs. Algorithms help the designer understand software requirements and outcomes in an effective manner, and provide a good understanding of the program flow. Knowing the benefits of using algorithms indicates that a candidate is aware of the role algorithms play in developing software.Įxample: “ An algorithm is a set of steps used to solve a problem or complete a particular task. ![]() Companies ask this question to assess the candidate's understanding of this fundamental aspect of computer engineering. What is an algorithm? What are the reasons for using an algorithm?Ī good understanding of algorithms is essential to every software programmer. Common Algorithm Interview Questionsįollowing are some common algorithm interview questions: 1. In this article, we discuss common questions asked on this subject and share example answers for each of them to help you model your own. Understanding common algorithm interview questions and preparing effective answers for these questions can help one feel more confident and prepared during an interview process. Since they are integral to computer science, companies often include algorithm questions during technical interviews to test potential hires. Algorithms help software developers write error-free and functional programmes. ![]()
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