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I applied via Campus Placement and was interviewed in Oct 2024. There were 2 interview rounds.
It was a 100-minute test consisting of mcqs and one coding question on articulation points in the graph.
Postgresql is known for its advanced features and support for complex queries, while MySQL is popular for its ease of use and speed.
Postgresql is known for its advanced features such as support for complex queries, indexing, and JSON data types.
MySQL is popular for its ease of use, speed, and compatibility with various platforms.
Postgresql has a strong focus on standards compliance and extensibility, while MySQL is mor...
ACID properties in DBMS ensure data integrity and consistency in transactions.
Atomicity: All operations in a transaction are completed successfully or none at all.
Consistency: Data is always in a valid state before and after a transaction.
Isolation: Transactions are executed independently without interference from other transactions.
Durability: Once a transaction is committed, changes are permanent and cannot be lost.
E...
Object-oriented programming concepts that focus on classes and objects
Encapsulation: Bundling data and methods that operate on the data into a single unit (class)
Inheritance: Ability of a class to inherit properties and behavior from another class
Polymorphism: Ability to present the same interface for different data types
Abstraction: Hiding the complex implementation details and showing only the necessary features
I applied via Naukri.com and was interviewed before Aug 2023. There was 1 interview round.
Approach debugging by understanding the code flow, using debugging tools, isolating the issue, and testing solutions.
Start by understanding the code flow and identifying potential areas where the issue may be occurring.
Use debugging tools like breakpoints, logging, and stack traces to pinpoint the source of the problem.
Isolate the issue by reproducing it consistently and narrowing down the scope of the problem.
Test pot...
Refactored a legacy codebase to improve performance by optimizing database queries.
Identified bottlenecks in the codebase by profiling and analyzing performance metrics.
Rewrote complex and inefficient database queries to improve response times.
Implemented caching mechanisms to reduce redundant database calls.
Refactored code to follow best practices and improve maintainability.
Tested the changes thoroughly to ensure the
By prioritizing tasks, using efficient algorithms, and conducting code reviews.
Prioritize tasks based on impact and complexity to focus on critical components first.
Utilize efficient algorithms and data structures to optimize code performance.
Conduct code reviews with team members to identify potential bottlenecks and suggest improvements.
Example: Prioritize implementing a caching mechanism for frequently accessed data
I would approach the situation by respectfully discussing the pros and cons of both solutions and finding a compromise.
Listen to the senior team member or client's perspective and understand their reasoning
Present your preferred solution along with the reasons why you believe it is the best approach
Engage in a constructive discussion to find common ground or a compromise
Consider the impact of each solution on the proje...
I regularly attend tech conferences, read industry blogs, participate in online courses, and collaborate with colleagues to stay updated.
Attend tech conferences to learn about new technologies and trends
Read industry blogs and articles to stay informed
Participate in online courses and tutorials to expand knowledge
Collaborate with colleagues to share insights and learn from each other
I use package managers, regularly update dependencies, and conduct security audits.
Utilize package managers like npm, pip, or Maven to manage dependencies
Regularly update dependencies to ensure compatibility and security patches
Conduct security audits using tools like OWASP Dependency-Check or Snyk
Consider using dependency locking to ensure consistent builds
I implemented a new feature using React Native and had to learn the framework on the job.
Researched online resources and documentation to understand React Native
Experimented with small projects to practice using React Native
Sought help from colleagues or online communities when facing challenges
Identified and addressed a potential bottleneck in a system before it became a problem.
Monitored system performance regularly to identify any potential bottlenecks
Analyzed system logs and metrics to pinpoint the root cause of the bottleneck
Implemented optimizations such as caching, indexing, or code refactoring to address the bottleneck
Collaborated with team members to implement a long-term solution to prevent similar
I prioritize tasks based on deadlines, impact, and dependencies, and use tools like to-do lists and project management software.
Evaluate deadlines and prioritize tasks that are due soon
Consider the impact of each task on the overall project or team goals
Identify dependencies between tasks and prioritize accordingly
Use tools like to-do lists, project management software, or time-blocking techniques to stay organized
Regu
I use consistent naming conventions, inline comments, and thorough documentation to ensure clean and well-documented code.
Follow consistent naming conventions for variables, functions, and classes to make the code easier to understand.
Include inline comments to explain complex logic or algorithms within the code.
Write thorough documentation for each function, class, and module to provide context and usage instructions ...
Approach integrating new feature into existing system without disruption
Analyze the existing system to understand its architecture and dependencies
Identify the impact of the new feature on the current functionality
Implement the new feature in a separate branch or environment for testing
Conduct thorough testing to ensure the new feature works as expected and does not break existing functionality
Gradually integrate the n...
I applied via Naukri.com and was interviewed before Jun 2023. There were 3 interview rounds.
Was asked a React coding question to fetch data using an API and show it on UI, for a frontend developer role.
The program capitalizes the first letter of each reversed word in a sentence.
Split the sentence into an array of words using space as a delimiter.
Reverse each word in the array and capitalize the first letter.
Join the modified words back into a sentence.
I appeared for an interview in Sep 2024, where I was asked the following questions.
Algorithms for manipulating arrays and strings in coding
Use sorting algorithms like quicksort and mergesort for arrays
Use string manipulation functions like substring and replace for strings
Use dynamic programming for optimizing solutions to array and string problems
Designing a large scale Ad Server
Use distributed systems for scalability
Implement caching for faster ad delivery
Ensure high availability and fault tolerance
Use real-time bidding for efficient ad placement
Implement fraud detection mechanisms
Ensure compliance with privacy regulations
Maximum sub sequence sum in an array
Use Kadane's algorithm
Initialize max_so_far and max_ending_here to 0
Iterate through the array and update max_ending_here and max_so_far
Return max_so_far
Endianness refers to the byte order of a system. It determines how multi-byte data types are stored in memory.
Little-endian systems store the least significant byte first, while big-endian systems store the most significant byte first.
Endianness can affect the way data is transmitted between systems.
To determine the endianness of a system, you can use the byte order mark (BOM) or write a test program that checks the by...
Sort an array of 0's and 1's only.
Use two pointers, one at the beginning and one at the end of the array.
Swap 0's from the beginning with 1's from the end until the pointers meet.
Alternatively, use a counting sort algorithm to count the number of 0's and 1's and then reconstruct the array.
Heaps are data structures used to efficiently find the maximum or minimum element in a collection.
Max heap: parent nodes are always greater than or equal to child nodes
Min heap: parent nodes are always smaller than or equal to child nodes
Heaps are commonly used in priority queues and sorting algorithms
Heap operations include insert, delete, and extract max/min
Example: An array [3, 8, 2, 5, 1, 4, 6] can be represented a
Find 3 numbers in an array where a+b=c.
Loop through the array and check for all possible combinations of a and b.
Use a hash table to store the values of a and b, and check if c is present in the hash table.
Sort the array and use two pointers to find a and b, and then check if their sum equals c.
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