Let me give you some tips & tricks so that you be more familiar with all of it.
1. Do your research
So firstly read about the company and how they interview their candidates. Do your research online or you might even email the company itself. This is actually helpful in other aspects too. For example, if the interviewer knows that you know about the company and read about it, it reflects your desire to join the company and it also shows that you’re kind of an active person.
Even though it comes without saying, practicing is the most important thing you need to do. You need to solve as many different expected questions as possible is crucial to succeed.
No matter how difficult the programming questions will be, the more you practice the easier it will get and the better you will do at the interview.
3. Write code on a piece of paper
If you know that you will be given questions to solve on paper or on a whiteboard then, you need to start practicing writing down code on a piece of paper because writing code on paper is completely different than just using your keyboard. And guess what? You may be great at solving programming questions but on paper you might not be as great.
I remember when I was at the university I was comfortable solving Java programming questions on PC and in midterm exam some questions were on paper. I thought it would be the same, but I was wrong. It was completely different. So I practiced a lot for the final and got a great result.
4. Online Programming Questions
Recently lots of companies took another route of testing their candidates, which is the online test.
The online test is a timely mannered test that will determine if you’re qualified or not. It’s usually a set of question, something like 20-30 questions with a limited amount of time. The most difficult part of it is time. You will most likely be given around two minutes to solve each question which requires lots of practice. normally question will not be as difficult as a one question on a whiteboard but if you’ve not been exposed to lots of different questions it will be super difficult.
The key to pass this test is to practice solving theses question within a very short amount of time.
I’ve a playlist in my Youtube Channel with different questions and where I show you how to solve these questions.
The bottom-line is that, if you solve lots of these questions you will have been exposed to lots of different ideas, hence, being able to do better. Good Luck