6 Problem-Solving HackerRank Questions and Answers for Your Interview
Team CodeQuotient / December 18, 2022 / Software Engineering Bootcamp
HackerRank is a tech company that provides a common platform for programmers and tech companies where people can participate in coding challenges (such as hackathons) or create their own. Most importantly, you can directly land a job from HackerRank if you successfully complete the challenges on its Jobs page . After that comes the interview stage. Usually, HackerRank questions tend to focus largely on problem-solving skills.
Let’s go through 6 problem-solving HackerRank sample questions and answers that can help you perform better in interviews.
Commonly Asked HackerRank Questions and Their Answers
HackerRank interviews have both technical and non-technical questions to evaluate a candidate. Since the people who cleared the coding challenges meet the criteria for technical knowledge, the interviewers majorly focus on other aspects – communication skills, mindset, ethics, etc.
Technical HackerRank Questions
The interviewer may ask you technical interview questions on topics similar to the ones mentioned below.
1. How do you build a palindrome?
One of the most common questions in HackerRank interviews is about building a palindrome. Unless you have a good understanding of strings and dynamic programming, you won’t be able to answer these questions. You need to store the palindromic substrings in a table and use them as building blocks for larger palindromes.
Interviewers love questions about palindromes because they test candidates’ ability to write clean code and their clarity of mind.
2. How do you organise containers of balls?
HackerRank interviewers will often ask you how to arrange coloured balls in various situations.
The answer may depend on the specific situation, as various arrangements may be needed. However, some common structures may include arranging the balls in order of size, colour, alphabetically, or numerically. Additionally, for more complex arrangements, a sorting algorithm could be used to arrange the balls according to the desired criteria.
Questions regarding organising containers of balls test your understanding of 2D arrays, sorting and iteration. Focus on these areas to be comfortable with such questions in HackerRank interviews.
3. How do you solve a problem in the Subarray Division?
Problems on subarray division can be solved in a few lines of code using the ‘two-pointers technique’. This technique works by having two pointers pointing to the array’s beginning and end, respectively, and then looping through the array. Thus, it is a perfect question to test the depth of a candidate’s coding skills , ability to optimise, and basic mathematical skills.
Software developers benefit from knowing the two-pointer technique, which helps them efficiently solve array problems and more. It’s also a common interview subject that comes up frequently. Preparing for problems on subarray division boosts your chances of cracking HackerRank interviews.
Non-Technical Questions
Non-technical questions often reveal more about a candidate’s mindset and problem-solving process in the work environment than technical questions. Here are some non-technical HackerRank questions and answers to better prepare you for interviews:
4. How will you select a new tool to invest in?
Interviewers ask questions like this to evaluate how a candidate does their research about something. While there is no obvious correct answer to this question, your response should show that you’re good at researching a product or service.
The key factors you must keep in mind while answering this question (or similar questions) are:
- The problem you’re trying to solve with the tool
- How credible are the people behind the tool?
- Alternatives of the tool
- Cost of the tool
- Pros and cons of the tool
Ensure your answer reflects the way you research anything new.
5. How will you tackle a situation where a teammate is bound to miss a deadline?
There are high chances of you or your teammates missing a few deadlines, be it for avoidable or unavoidable circumstances. When an interviewer asks what you’ll do in such situations, they are trying to figure out how you deal with crises and support your team members. Your answer should reflect empathy and a drive to solve challenges on short notice. Like most non-technical questions, the attitude behind the answer is more important than the contents of the answer.
6. Will you break the rules or guidelines for the larger benefit of the company?
Interviewers love questions that put candidates in a tough spot. That’s why interviewers often ask interviewees why the company should not hire them.
When asked whether you’d be willing to break any rule, be diplomatic in your answer. It is best to back your argument with logic and facts without being rigid on either perspective. Questions like these test a candidate’s character, morals, and ethics.
General Tips for HackerRank Questions and Answers
For those of you who wish to go the extra mile, here are some general suggestions for acing your interview:
- Follow a framework like STAR (Situation, Task, Action, Result) or SOAR (Situation, Obstacle, Action, Results) to answer problem-solving questions
- Read the job description thoroughly and understand your job responsibilities
- Learn about the company – mission and values
- Work on your speaking skills, either with a friend or in front of a mirror/camera
Get Ready for HackerRank Interviews With Codequotient
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Problem Solving Concepts. It covers basic topics of Data Structures (such as Arrays, Strings) and Algorithms (such as Sorting and Searching). Do you have more questions? Check out our FAQ. Take the HackerRank Skills Test. Join over 16 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming ...
Solving problems is the core of computer science. Programmers must first understand how a human solves a problem, then understand how to translate this "algorithm" into something a computer can do, and finally, how to write the specific code to implement the solution. At its core, problem-solving focuses on the study, understanding, and usage ...
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Eventually, I decided to try taking the Problem Solving (Basic) certification exam from Hackerrank. The exam had 2 coding test problems that had to be completed within 90 minutes.
Hackerrank problem solving (basic) skills certification test complete solutions.1. Active Traders 2.Balanced System Files Partition Problem 2 Complete Progr...
⭐️ Content Description ⭐️In this video, I have explained about the necessary information about the problem before solving and how to solve a problem efficien...
Hackerrank problem solving (basic) skills certification test complete solutions.1. Unexpected Demand Complete Program In my GithubProblem Solving (Basic) Sol...
Let's go through 6 problem-solving HackerRank sample questions and answers that can help you perform better in interviews. ... Thus, it is a perfect question to test the depth of a candidate's coding skills, ability to optimise, and basic mathematical skills. Software developers benefit from knowing the two-pointer technique, which helps ...
Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. ... competitive-programming hackerrank hackerrank-solutions hackerrank-java hackerrank-problem-solutions hackk hackerrank-problem-solving hackerrank-certificates hackerrank-certification hackerrank-pr Updated Aug 27, 2023; Java ...
To associate your repository with the hackerrank-problem-solving topic, visit your repo's landing page and select "manage topics." GitHub is where people build software. More than 100 million people use GitHub to discover, fork, and contribute to over 420 million projects.
Tip #1: Start Easy, and Gently Work Your Way Up. L ike most other competitive programming platforms, HackerRank groups challenges into different difficulty levels. When you first start, the best way is to use the filters on the right side, start from the 'Easy' ones, then gradually work your way down the difficulty chain.
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Challenges: 54. , Attempts: 392608. , Mock Tests: 0. Problem Solving (Basic) Problem Solving (Intermediate) +1. Join over 16 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews.
Hackerrank Problem Solving(Basic) Certificate test soltions. Solutions to Certification of Problem Solving Basic on Hackerrank. To get a certificate, two problems have to be solved within 90 minutes. The following is a list of possible problems per certificate. Problem Solving (Basic)
These things take practice and tons of it. Don't stress too much. When you're stuck, watch a video on the problem so you learn the logic behind solving it. After you solve a problem with external help- come back to it in a week or 2 and see if you can still solve it from scratch. If you can- the material stuck.
The cost incurred on this day is 2 + 5 + 3 = 10. On the second day, the fourth and fifth laptops are manufactured, but because only one of them is legal, the daily count isn't met, so that day is not taken into consideration. Therefore, the maximum cost incurred on a single day is 10.
The solution to the "unexpected demand" problem in the C programming language.
HackerRank Problem Solving (Basic) Skill Certification Test. Took this test on HackerRank here on 14th July 2020. Certificate can be viewed here. Programs. Road Repair; Balanced System File Partition Problem; About. Contains solved programs for the HackerRank Problem Solving (Basics) Skill Test Certification 🎓.
🚀 Delighted to share my first certification from HackerRank for completing Problem Solving (Basics). 🚀 As a beginner, I found the platform incredibly helpful. Looking forward to developing ...
Over 40% of developers worldwide and 3,000 companies use HackerRank. It's not a pipeline problem. It's a spotlight problem. Tech hiring needs a reset. From prepping for jobs and practicing coding to running a world-class technical interview, give developers the tools they need to showcase their skills, passion, and potential.
To associate your repository with the hackerrank-problem-solutions topic, visit your repo's landing page and select "manage topics." GitHub is where people build software. More than 100 million people use GitHub to discover, fork, and contribute to over 420 million projects.