Codestrup Infotech Node JS Developer Interview Questions and Answers

First round was coding as well as aptitude done together went well I guess focusing on codes helps a lot.

Q1. 2nd round included tr and mr round went quite enegritic
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Round duration - 90 Minutes
Round difficulty - Medium

This is a written round on paper for everyone. Three coding questions were given. Two out of three must be correct covering every single edge case to qualify for the next round. Only the most optimal solution was to be considered.

Q1. 
Maximum Subarray Sum Problem Statement
Given an array ARR consisting of N integers, your goal is to determine the maximum possible sum of a non-empty contiguous subarray within this array.
Example of Sub...read more
Ans. 
Find the maximum sum of a contiguous subarray in an array of integers.
• Use Kadane's algorithm to find the maximum subarray sum in linear time.

• Initialize two variables: maxSum and currentSum.

• Iterate through the array and update currentSum by adding the current element or starting a new subarray.

• Update maxSum if currentSum becomes greater than maxSum.

• Return maxSum as the maximum subarray sum.
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Round duration - 50 Minutes
Round difficulty - Easy

This was face to face interview round.

Q1. 
Finding Triplets in a Binary Tree Problem Statement
You are given a Binary Tree of integers and an integer 'X'. Your task is to find all the triplets in the tree whose sum is strictly greater than 'X'. Th...read more
Ans. 
Find all triplets in a binary tree whose sum is greater than a given integer X, with a grandparent-parent-child relationship.
• Traverse the binary tree to find all possible triplets.

• Check if the sum of each triplet is greater than X.

• Ensure the relationship of grandparent-parent-child in each triplet.

• Return the valid triplets in any order.

• Handle constraints and edge cases appropriately.
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Round duration - 60 Minutes
Round difficulty - Easy

FACE TO FACE ROUND INTERVIEW

Q1. Can you tell me about yourself?
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Q2. What is the difference between Mutex and Semaphores? Please provide a real-life example.
Ans. 
Mutex is used for exclusive access to a resource by only one thread at a time, while Semaphores can allow multiple threads to access a resource simultaneously.
• Mutex is binary and allows only one thread to access a resource at a time, while Semaphores can have a count greater than one.

• Mutex is used for protecting critical sections of code, while Semaphores can be used for controlling access to a pool of resources.

• Exampl...read more
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Q1. What are your salary expectations?
Ans. 
I am open to discussing salary based on the responsibilities and opportunities offered by the position.
• I am flexible and open to negotiation.

• I am looking for a competitive salary that reflects my skills and experience.

• I am more interested in the overall compensation package, including benefits and growth opportunities.

• I would like to learn more about the company's salary range for this position.

• I am confident that we c...read more
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Q2. What is your family background?
Ans. 
My family background is diverse and multicultural.
• My parents are from different countries, which has exposed me to different cultures and perspectives.

• I have relatives who work in various industries, including technology and healthcare.

• Growing up, my family encouraged me to pursue my interests in computer science and supported my education in the field.
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Q3. Share details of your previous job.
Ans. 
I worked as a Software Developer at XYZ Company.
• Developed and maintained software applications using Java and Python.

• Collaborated with a team of developers to design and implement new features.

• Participated in code reviews and debugging sessions to ensure high-quality code.

• Worked closely with clients to gather requirements and provide technical support.

• Implemented unit tests and performed software testing to identify an...read more
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Q4. Why should we hire you?
Ans. 
I have a strong background in software development and a proven track record of delivering high-quality projects on time and within budget.
• I have a deep understanding of various programming languages and frameworks, allowing me to adapt quickly to new technologies.

• I am highly skilled in problem-solving and troubleshooting, which enables me to identify and resolve issues efficiently.

• I am a team player and have excellent...read more
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Q5. Why are you looking for a change?
Ans. 
Looking for new challenges and growth opportunities.
• Seeking a more challenging role to enhance my skills and knowledge.

• Interested in working on cutting-edge technologies and projects.

• Want to be part of a dynamic and innovative team.

• Desire to expand my professional network and learn from industry experts.
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Q6. Where do you see yourself in 5 years?
Ans. 
In 5 years, I see myself as a senior software developer leading a team and working on complex projects.
• Leading a team of developers

• Working on complex projects

• Continuously learning and staying updated with new technologies

• Contributing to the growth and success of the company
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Q7. What are your strengths and weaknesses?
Ans. 
My strengths include problem-solving, attention to detail, and teamwork. My weaknesses include time management and public speaking.
• Strengths: problem-solving, attention to detail, teamwork

• Weaknesses: time management, public speaking
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Q8. Tell me about yourself.
Ans. 
I am a software developer with experience in various programming languages and a passion for creating innovative solutions.
• Experienced in Java, C++, and Python

• Developed a mobile app using React Native

• Worked on a team to create a web application using Angular

• Strong problem-solving and analytical skills
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Q9. Tell me about yourself
Ans. 
I am a software developer with experience in web development and a passion for problem-solving.
• Experienced in web development using HTML, CSS, and JavaScript

• Proficient in programming languages such as Java and Python

• Familiar with frameworks like React and Angular

• Strong problem-solving and analytical skills

• Excellent teamwork and communication abilities
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Q10. What are your strength and weakness
Ans. 
My strength is problem-solving and my weakness is sometimes overthinking.
• Strength: Problem-solving

• Weakness: Overthinking
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Q11. Where do you see yourself in 5 year's
Ans. 
In 5 years, I see myself as a senior software developer leading a team and working on complex projects.
• Leading a team of developers

• Working on complex projects

• Continuously learning and improving my skills

• Contributing to the growth and success of the company
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Q12. Why are you looking for a change
Ans. 
Seeking new opportunities for professional growth and challenges.
• Looking for a more challenging role

• Want to expand my skill set

• Seeking better career prospects

• Interested in working with new technologies

• Want to work in a more collaborative environment
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Q13. I think I am very flexible and adaptive to learning new things
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Q14. Share your details for your previous job
Ans. 
I worked as a Software Developer at XYZ Company.
• Developed and maintained web applications using Java and Spring framework

• Collaborated with cross-functional teams to gather requirements and design solutions

• Implemented unit tests and performed code reviews to ensure code quality

• Participated in Agile development process and attended daily stand-up meetings

• Troubleshooted and resolved software defects reported by users
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Q15. What is your family background
Ans. 
My family background is diverse and multicultural, with members from different professions and cultural backgrounds.
• My father is a doctor and my mother is a teacher.

• I have two siblings, one is an engineer and the other is a lawyer.

• We celebrate various cultural festivals and traditions together.

• My family values education and encourages continuous learning.
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Q16. What are your salary expectations
Ans. 
I am open to discussing salary based on the responsibilities and opportunities offered by the position.
• I am flexible and open to negotiation.

• I am looking for a fair and competitive salary based on my skills and experience.

• I am more interested in the overall compensation package, including benefits and growth opportunities.

• I am confident that we can come to a mutually beneficial agreement.
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Q1. Agile, spring batch, profiling , cache , db stored procedures, transaction management, oauth2 security,
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