by Lindsay

A tech job interview usually starts with a simple phone call from a recruiter within the company. The applicant will then proceed to a technical discussion, which will last around an hour, and conduct through Skype, Zoom, or Google Hangouts. It includes a series of technical questions and the interviewer’s ability to inspect the candidate’s code in real-time.

May ask questions on the applicant’s ability to create or debug data structures and algorithms. If you are looking for a quick course on algorithm and data structures, we recommend trying out AlgoMonster.

Applicants may proceed to the in-person step after a successful phone interview. It could contain another round of 2-6 technical questions, and applicants solving coding problems live in front of the interviewer.

It is an opportunity to demonstrate your coding abilities as well as how you collaborate with others. You can chat through your thought processes to accomplish the challenge with the interviewer present, allowing you to display problem-solving skills.

The interviewer tries to look for your diligence when checking plus correcting the code besides your competence when finishing the assignment. The interviewer may evaluate your logical reasoning, usage of best practices, and communication skills.

Applicants often offer a variety of behavioral questions in addition to the coding problems. Questions might include how much experience the applicant has with various programming languages and development tools and what talents the applicant would bring to the role.


Concepts emphasized during a coding interview

The emphasis in the coding interview will be on your comprehension of data structures and algorithms. Here’s what you need to know.

Big O Complexity: Before digging into data structures and algorithms, you must first understand algorithmic notation, representing an algorithm’s time and space complexity. This concept is required of you, mainly because the runtime of a program and its data size will be significant when you’re on the job.

Strings: You should be familiar with lines, just as you should be with arrays. You should be able to manipulate strings and understand rotation and concatenation concerns.

Algorithms: You should be familiar with sorting techniques (bubble, heap, merge, and so on) as well as searching algorithms (binary search, linear search), which you may ask to develop. Backtracking, brute force, dynamic programming, and divide-and-conquer are just a few of the skills you can learn.

Arrays: Arrays should be second nature to you. If you don’t, you should know:

what an array is for, how to manipulate it, how to iterate across an array, and so on. Checking whether an array is a permutation is a classic problem.

Advanced data structures: Now, you’ll have to learn even more of the exciting stuff. Refresh your knowledge on Linked Lists, Hash Tables, Stacks, Queues, Heaps, Binary Trees, and other data structures. These data structures are crucial since you’ll need to know which one to employ if asked during the coding interview.

System Design: System design questions are becoming more common in coding interviews. Because of the complexity of the difficulties, this is a challenging area for many engineers.

What should you do in preparation for my coding interview?

The most important thing to remember is to practice, practice, and practice some more. Passing the coding interview is not a game. It all boils down to how much time you devote to studying key computer science concepts and learning code interview practices.

Because data structures and algorithms are likely to be a big part of the coding difficulties, you should spend some time studying them before your interview. In your preparation, try to replicate the actual interview conditions: Practice on a whiteboard with a timer to simulate the time pressure of coding difficulties. Furthermore, the interviewee should practice describing your thought processes aloud while you develop your code.

Companies will accept alternative languages such as JavaScript if you are familiar with a mainstream coding language such as C++, Java, or Python. To make your learning more effective, you must stay in the language you choose while you prepare.

What language should I use for a coding interview?

For a coding interview, there is no ideal language to employ. The important thing is to use the most natural one to you, as long as it widely speaks. Most large corporations will provide you with a choice of preferred languages from which you can choose.

Employers will presume you’ll learn more on the job if you use the most common languages while applying for entry-level roles.

You might utilize a language particular to the company’s technology if you want to go above and above, or if you’re searching for a specialist position. You could master Swift if you want to work at Apple, or you could interview in Golang if you want to work at Google.

It’s critical to recognize that you’ll feel nervous and stressed during the interview. You are more prone to make mistakes if a language demands you to overthink. Choose one that makes you feel secure, well-informed, and at ease.

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