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posted on 7 Oct 2023
Easy basic dsa questions
Longest common subsequence is the longest sequence of characters that appear in the same order in two or more strings.
Use dynamic programming to solve this problem efficiently.
Create a 2D array to store the lengths of longest common subsequences of substrings.
Traverse the array to find the longest common subsequence.
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I applied via Approached by Company and was interviewed in Jul 2024. There was 1 interview round.
posted on 3 Mar 2024
I applied via Walk-in and was interviewed in Feb 2024. There were 3 interview rounds.
Software testing and coding related questions
Programming test coding
Types of software testing include unit testing, integration testing, system testing, and acceptance testing.
Unit testing focuses on testing individual components or modules of the software.
Integration testing involves testing how different modules work together.
System testing checks the entire system as a whole.
Acceptance testing ensures that the software meets the requirements of the end users.
Unit testing is a software testing method where individual units or components of a software are tested in isolation.
Unit testing helps in identifying bugs early in the development process.
It ensures that each unit of code is working as expected.
Unit tests are automated and can be run frequently to catch regressions.
Mocking and stubbing are often used in unit testing to isolate the unit being tested.
Example: Testing a ...
Integration testing is testing the interactions between different components/modules of a software system.
Tests how well different parts of the system work together
Ensures that data flows correctly between components
Identifies any issues with communication or data transfer
Examples: testing API integrations, testing database connections
Types of software testing include unit testing, integration testing, system testing, and acceptance testing.
Unit testing focuses on testing individual components or modules of the software.
Integration testing involves testing the interactions between different components/modules.
System testing tests the entire system as a whole.
Acceptance testing is performed to validate if the software meets the requirements of the st
Integration testing is testing the interactions between different components or systems to ensure they work together correctly.
Integration testing verifies that different modules or components of a software work together as expected.
It focuses on testing the interfaces and interactions between components.
Examples include testing the integration between a front-end user interface and a back-end database, or between diff
The round primarily focused on assessing data structure and algorithm (DSA) knowledge, as well as coding proficiency.
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 Indeed and was interviewed in Mar 2023. There were 3 interview rounds.
I am a software developer with a passion for creating efficient and user-friendly applications.
Proficient in multiple programming languages such as Java, C++, and Python
Experience in developing web applications using HTML, CSS, and JavaScript
Strong problem-solving and analytical skills
Familiarity with agile development methodologies
Excellent communication and teamwork abilities
I have 5 years of experience as a Software Developer and I want to switch to explore new technologies and challenges.
I have 5 years of experience as a Software Developer.
I have gained expertise in various programming languages and frameworks.
I have successfully delivered multiple projects and contributed to their success.
I want to switch to explore new technologies and challenges.
I believe switching will help me enhanc
Simple basic code for Form data
Easy leetcode data structure question
Code for calling a REST API and designing a rate limiter
Use a library like requests or axios to make the API call
Implement a token bucket algorithm for rate limiting
Set a maximum number of requests per second and queue excess requests
Consider using a distributed rate limiter for scalability
Design a database schema for Instagram.
Create tables for users, posts, comments, likes, and follows.
Use primary and foreign keys to establish relationships between tables.
Store user data such as username, email, and password securely.
Include fields for post content, location, and timestamp.
Track likes and comments on posts.
Implement a notification system for follows and likes.
Consider scalability and performance in the...
posted on 14 Feb 2024
I was interviewed in Aug 2023.
First there was aptitude round
The coding question was average level
To create an external tab link, use HTML anchor tag with target attribute set to _blank.
Use <a> tag in HTML with href attribute pointing to the external link
Set the target attribute of the <a> tag to _blank to open the link in a new tab
Example: <a href='https://www.example.com' target='_blank'>External Link</a>
I applied via Recruitment Consulltant and was interviewed before Sep 2022. There were 2 interview rounds.
Proficient in Java, Python, and JavaScript.
Java
Python
JavaScript
Yes, I have worked with several frameworks and libraries including React, Angular, and Node.js.
Worked with React for building user interfaces
Experience with Angular for front-end development
Utilized Node.js for server-side scripting
I approach problem-solving in software development by breaking down the issue, researching possible solutions, and collaborating with team members.
Identify the problem and gather all relevant information
Break down the problem into smaller, manageable tasks
Research possible solutions and consider different approaches
Collaborate with team members to brainstorm ideas and gather feedback
Implement and test the solution, mak
Yes, I have extensive experience with version control systems like Git.
I have been using Git for version control in all my projects for the past 5 years.
I am proficient in creating branches, merging code, resolving conflicts, and performing code reviews using Git.
I have experience with popular Git hosting services like GitHub, GitLab, and Bitbucket.
Yes, I am familiar with software testing methodologies and tools.
I have experience with both manual and automated testing
I am familiar with Agile testing methodologies such as Scrum and Kanban
I have used tools like Selenium, JUnit, and TestNG for testing
I understand the importance of regression testing and performance testing
Yes, I have experience in both backend and frontend development.
I have worked on backend development using languages like Java, Python, and Node.js to build APIs and handle server-side logic.
I have experience in frontend development using technologies like HTML, CSS, and JavaScript to create user interfaces and interactive web applications.
I have used frameworks like React and Angular for frontend development and frame...
Debugging and troubleshooting in software development involves identifying and fixing errors in code to ensure proper functionality.
Identify the problem by reproducing the issue and understanding the expected behavior.
Use debugging tools like breakpoints, logging, and stack traces to pinpoint the source of the error.
Review the code for logic errors, syntax errors, or incorrect assumptions.
Test potential solutions to th...
Yes, I can provide examples of my code that demonstrate my coding style and best practices.
I follow the SOLID principles to ensure my code is maintainable and scalable.
I use design patterns such as MVC, Singleton, and Factory to organize my code effectively.
I write clean and readable code with meaningful variable names and comments for clarity.
I regularly refactor my code to improve performance and readability.
I utiliz...
Yes, I am comfortable working with databases and SQL.
Proficient in writing complex SQL queries for data retrieval and manipulation
Experience with database design, normalization, and optimization
Familiarity with stored procedures, triggers, and views
Knowledge of indexing and query performance tuning
Examples: SELECT * FROM table WHERE condition; CREATE TABLE table_name (column1 datatype, column2 datatype, ...);
Yes, I have experience working with cloud platforms like AWS and Azure.
Developed and deployed applications on AWS using services like EC2, S3, and RDS
Utilized Azure for building and managing cloud-based solutions
Implemented serverless architecture using AWS Lambda functions
Worked on setting up and configuring cloud infrastructure on both AWS and Azure
Scalability in software architecture refers to the ability of a system to handle increasing amounts of work or its potential to accommodate growth.
Scalability involves designing a system in a way that allows it to easily expand in terms of processing power, storage capacity, or network bandwidth.
Horizontal scalability involves adding more machines to distribute the load, while vertical scalability involves upgrading ex...
Yes, I have experience using project management tools and issue tracking systems.
I have used Jira extensively for project management and issue tracking.
I am familiar with Trello for task management and collaboration.
I have also used Asana for project planning and tracking progress.
Yes, I am familiar with security practices and principles in software development.
I have experience implementing secure coding practices such as input validation, output encoding, and proper error handling.
I am knowledgeable about common security vulnerabilities like SQL injection, cross-site scripting (XSS), and cross-site request forgery (CSRF).
I understand the importance of data encryption, secure authentication mec...
Yes, I have experience working on projects that involved integrating third-party APIs and services.
Integrated payment gateways like PayPal and Stripe for e-commerce applications
Utilized social media APIs such as Facebook and Twitter for user authentication and sharing features
Implemented Google Maps API for location-based services
Refactored code by optimizing database queries to improve performance.
Identified slow database queries impacting performance.
Analyzed query execution plans to identify bottlenecks.
Rewrote queries to use indexes and optimize joins.
Implemented caching mechanisms to reduce database load.
Measured performance improvements using profiling tools.
I handle tight deadlines by prioritizing tasks based on urgency and impact on project goals.
Break down the project into smaller tasks and set realistic deadlines for each
Communicate with team members and stakeholders to ensure everyone is on the same page
Use project management tools like Trello or Jira to track progress and prioritize tasks
Focus on high-impact tasks first to ensure project goals are met
Be flexible and ...
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