how to solve interview coding questions

Now, the other thing that is crucial at this step is to talk aloud. In an approach named Comments First Approach. Write the comments for the code (like you would if there was code inside) – [a bit similar to pseudo code] + get feedback. I assume you would like them to know you can: You don’t only want to solve the question, you want to make an impression. Then you walk him through each line of code and explain again what is happening there. When you solve a problem with linked lists, think twice about the corner cases. Here you need to pay special attention to the corner cases. This topic refers to problems where the array is used just for storage and the solution includes basic techniques, such as iterating with two pointers. If you understand what I’m explaining, it means that I’m doing a great job as a candidate. You can also mention what difference you made for the users. For the rest of the article, I will assume that you’ve chosen a language and know well its syntax. No more searching online other guides, just go and practice. If you have time, also learn Heapsort. If you receive a problem telling you to find the minimum or maximum, then think of heaps, sorting or stacks. Turn this presentation into your advantage! The interview has five parts which we’ll discuss in depth. Pick the one you like most and stick with it. The key here is that practice will tell its word now, and I have good news for you! I want to be clear with you from the beginning: there is no such shortcut or trick to pass the interview. The developing process was iterative, and we made some mistakes on the way. Coding without a keyboard, IDE, Google and time can be stressful and annoying. You can connect with him on LinkedIn or Facebook. The challenge of getting an interview in a big company is that you will be … How to give your best during the coding interview. I was responsible for coding the backend in Node.js and database in MongoDB. 13) Sorting: Be sure that you can implement mergesort and quicksort. He would happily say “Yes, let’s go through your code”. Now, moving to the coding itself, I want to tell you something. After reading this you might be tempted to search for other articles on the same topic, because “Maybe I’ll find more tips and tricks that will help me”. He wants you to talk aloud and explain everything that you write. This part is not all about coding, it’s also about talking loud and explaining what you are coding. Do you use a min-heap or a max-heap? Be fluent in the hash tables library of your language and practice at least five problems. Do the code above cover the basic scenarios? Yes, this code can be shorter, I know. Which answer do you like more? Practice until you can be confident when to use a min-heap or a max-heap. Before you get invited to the coding interview, you need to apply for the position and have a CV that shines among the others. I’m still working on the course, but you can get early access to some of the lessons and also help me with your feedback, by joining the course Facebook group. There were some moments in which technical or team problems arose, but in the end, everything went well and we got the highest mark of the year!”. This is the question we are solving – my own original, copyrights protected, SHLOOF BLOOP (does not resemble to fizz buzz in anyway! I learned many things from this project, especially how to work in a team. How would you print the biggest five elements from a number sequence? In case you are interested in practicing for the interview, I suggest reading this post. For most tech companies, the coding interview consists of Algorithms & Data structures problems. Think that now you are the interviewer and I am the candidate. The reason is simple: he doesn’t know what you are coding if you don’t explain. Take a moment to think about the solution. Your job is to repair the code by yourself. Remember that the interview is a fight with yourself, the more you practice, the higher your chance of winning. You may not like it and start looking somewhere else for a trick to understand how to solve interview questions, but it doesn’t exist. “Introduction to Algorithms and Data Structures in C++”. It’s easy to spot a fake personality that tries to trick you. Make the interviewer really understand what you want to say, and don’t assume he gets bored while hearing to you. Let me ask you a question: have you ever dreamed of working in a big tech company, like Microsoft? I would be happy to hear what would you like to read more about. Can I have a look at the code to be sure there are no mistakes?”. I wrote the backend in Node.js.”, The way you present yourself really matters. Don’t try to be flattering. So, feel free to judge me as a candidate and leave a comment if something doesn’t make sense. All of the above does not exist in the environment of the job interview. The interviewer is expecting you to find the most optimal solution, code it and explain what you have just coded. Does it cover the edge cases it should? I want you to pay special attention to how I speak and explain. 7) Queues: Don’t confuse them with stacks, because they have two ends. But it’s the most beautiful if you understand the thinking behind it. 6) Stacks: Be familiar with the idea that you can manipulate just one end of the stack. For example, forgot if the index is the first or second element in a foreach loop. The practice system tells you exactly the test case where your code failed. After the task is complete, you are pretty excited and want to sit for a bit and take a break. Practice on making a copy of the graph in memory and detecting cycles in graphs. Hence, in this article, I want to share my experience with the coding interview and tell you the straightest way to pass it. I said ‘briefly’ because he won’t give you many details about the constraints, corner cases or how you receive the data. In real life, you are not writing code on a white board and then compiling it in your head (unless you are, in this case, please stop reading and leave a comment starting with “IM!=HUMAN”). Needless to say – I wrote the code before I had the complete solution in mind.While this can work in some cases, it can be not such a good idea: It can work of course, and many people think while they code in real life But in an interview you don’t have time for so many deletions and retries. 3) Strings: Know how to manipulate a string in your language, and be familiar with problems that ask you to concatenate or rotate them. … The article has three parts & three videos and it will take around 30 minutes to read. After you spot the data structure, think of typical algorithms and problems that you have seen before using this data structure. For example, if you receive a problem with trees, it’s clear that you need to use algorithms specific to trees, such as recursion, right? Your experience, intelligence and everything else is already fixed. How to get an Interview? We took the project from a basic idea and turned it into a real application. A classic problem is to check if a given array is a permutation. Practice a few problems, and don’t think that any problem can be solved using Greedy. The goal here is to think about the algorithm, express it in the comments (so eventually you will also have a commented code). The interviewer is expecting you to find the most optimal solution, code … 16) Graphs: They are probably the most used data structure in computer science. It won’t make you succeed if you don’t know the answer. Ask questions in the end! The single way to find optimal solutions to algorithmic problems is by practicing, solving as many problems as possible. ?A: Yes, no need for input validation.Great, that saved me some time and code. This is the recipe: Understand the question and ask for clarifications. No one likes messy codes that one can barely read. After you write it, try to see what’s the response from the interviewer. I think I understood the question, but I have some more things I want to be sure of before jumping to the next phase:Q: Oh, Mrs. interviewer? The coding interview is a fight with yourself, and the single way to win it is to practice a lot. If so, be sure that most of us did, too.

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