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I was interviewed in Dec 2021.
Round duration - 90 Minutes
Round difficulty - Easy
In this round, I was asked about my role, tools, and tech stacks used in my current company. I was also asked 1 coding question and 1 system design question
You are provided with two singly linked lists containing integers, where both lists converge at some node belonging to a third linked list.
Your task is to determine t...
Find the node where two linked lists merge, return -1 if no merging occurs.
Traverse both lists to find the lengths and the last nodes
Align the starting points of the lists by adjusting the pointers
Traverse again to find the merging node or return -1 if no merging occurs
Discussing the low-level design of a system similar to Flipkart
Divide the system into modules like user authentication, product catalog, shopping cart, payment gateway
Discuss the data flow between these modules and how they interact with each other
Explain the database schema design for storing user information, product details, and order history
Consider scalability and performance optimizations like caching, load balan...
Round duration - 120 minutes
Round difficulty - Medium
3 coding questions were asked
Given the head node of a singly linked list, return a pointer pointing to the middle node of the linked list. In case the count of elements is even, return the node...
Return the middle node of a singly linked list, or the second middle node if count is even.
Traverse the linked list with two pointers, one moving twice as fast as the other
When the fast pointer reaches the end, the slow pointer will be at the middle
If count is even, return the second middle node
Handle edge cases like single node or no midpoint
Given a positive integer N
, find the number of ways to express N
as a sum of cubes of two integers, A
and B
, such that:
N = A^3 + B^3
Ensure you adhere to the following c...
The problem involves finding the number of ways to express a given integer as a sum of cubes of two integers.
Iterate through all possible values of A and B within the given constraints.
Check if A^3 + B^3 equals the given integer N.
Count the valid pairs of A and B that satisfy the condition.
Return the count of valid pairs for each test case.
You are given the start and end times of 'N' intervals. Write a function to determine if any two intervals overlap.
If an interval ends at time T and anothe...
Determine if any two intervals overlap based on start and end times.
Iterate through intervals and check for any overlapping intervals by comparing start and end times.
Sort the intervals based on start times to optimize the solution.
Consider edge cases where intervals end and start at the same time but are not considered overlapping.
Round duration - 90 Minutes
Round difficulty - Easy
This was mostly system design round and some os questions were asked
Designing an app like Uber involves creating a platform for connecting riders with drivers for on-demand transportation services.
Develop a user-friendly interface for riders to request rides and for drivers to accept requests.
Implement a real-time tracking system to show the location of drivers and estimated arrival times.
Incorporate a payment system for seamless transactions between riders and drivers.
Include a rating...
Threading is a way for a program to execute multiple tasks concurrently. Different scheduling algorithms determine the order in which threads are executed.
Threading allows multiple tasks to run concurrently within a single process.
Scheduling algorithms determine the order in which threads are executed, such as First-Come-First-Served (FCFS), Round Robin, Priority-Based Scheduling, etc.
FCFS schedules threads based on th...
Tip 1 : Stay focused
Tip 2 : Practice coding questions
Tip 3 : View previous interviews of the company applying to
Tip 1 : Have atleast 3 great project
Tip 2 : Write only what you know and prepare well
Precompilation unit is a compiled code that can be reused by multiple source files.
Precompilation unit is created by the compiler from the source code.
It contains the compiled code of header files and other dependencies.
It can be reused by multiple source files, reducing compilation time.
It is also known as precompiled header or PCH.
Example: stdafx.h in Visual Studio is a precompiled header file.
posted on 15 Feb 2016
The first 50 prime numbers are...
Start with 2, the first prime number
Check each odd number greater than 2
Use trial division to check if a number is prime
Stop when you have found 50 prime numbers
Sorting a file within a range
Use a sorting algorithm like quicksort or mergesort
Read the file and store the data in an array or list
Sort the array or list within the given range
Write the sorted data back to the file
I am a passionate software engineer with experience in developing web applications using various technologies.
Experienced in developing web applications using HTML, CSS, JavaScript, and frameworks like React and Angular
Proficient in backend development with Node.js, Express, and MongoDB
Familiar with version control systems like Git and project management tools like Jira
posted on 27 Dec 2015
I am a passionate software engineer with experience in developing web applications and a strong background in computer science.
Experienced in developing web applications using technologies such as HTML, CSS, JavaScript, and React
Strong background in computer science with knowledge in algorithms and data structures
Passionate about learning new technologies and solving complex problems
I have worked on various projects including a web application for inventory management and a mobile app for fitness tracking.
Developed a web application using React for inventory management
Created a mobile app using Flutter for fitness tracking
Implemented RESTful APIs for communication between frontend and backend systems
My area of interest is artificial intelligence and machine learning.
I have experience in developing machine learning models for predictive analytics.
I am interested in natural language processing and computer vision applications.
I enjoy exploring deep learning algorithms and neural networks.
I have worked on projects involving recommendation systems and image recognition.
C++ is a high-level programming language with features like object-oriented programming, templates, and memory management.
C++ supports object-oriented programming concepts like encapsulation, inheritance, and polymorphism.
Templates allow generic programming and code reusability.
C++ provides low-level memory manipulation through pointers.
Standard Template Library (STL) provides a collection of classes and functions for ...
Big Data refers to large and complex data sets that cannot be processed using traditional data processing methods.
Big Data is characterized by the 3Vs - Volume, Velocity, and Variety.
It requires specialized tools and technologies such as Hadoop, Spark, and NoSQL databases.
Examples of Big Data include social media data, sensor data, and financial market data.
Program to reverse a string without using string function
Iterate through the string from end to start and append each character to a new string
Use a loop to swap the first and last characters, then move towards the middle until the entire string is reversed
Convert the string to a character array, then swap the first and last elements until the entire array is reversed
I was responsible for designing and implementing the project's database and backend functionality.
Designed the database schema and created the necessary tables
Implemented the backend functionality using Java and Spring framework
Collaborated with team members to integrate the frontend and backend components
Tested the application and fixed any bugs or issues that arose
Presented the project to the faculty and received pos
Keys in a database are unique identifiers used to establish relationships between tables and ensure data integrity.
Keys are used to uniquely identify records in a database table.
Primary keys are used to uniquely identify each record in a table.
Foreign keys establish relationships between tables.
Keys help enforce data integrity and maintain consistency in the database.
Examples of keys include primary keys, foreign keys,
Issues in cloud include security, downtime, vendor lock-in, and data privacy.
Security concerns such as data breaches and unauthorized access
Downtime and service interruptions affecting business operations
Vendor lock-in and limited flexibility in choosing cloud providers
Data privacy and compliance with regulations such as GDPR and HIPAA
Developed a web application for online shopping using React and Node.js
Implemented user authentication and authorization using JSON Web Tokens (JWT)
Used MongoDB as the database to store user and product information
Implemented a search feature using Elasticsearch to provide fast and accurate search results
Integrated Stripe payment gateway for secure online transactions
The flow diagram of my final year project showcases the step-by-step process of its execution.
The flow diagram illustrates the sequence of activities and their dependencies.
It helps in understanding the overall structure and logic of the project.
Each step in the diagram represents a specific task or action.
Arrows indicate the flow of control or data between different steps.
Decision points are represented by diamond-sha...
Normalisation reduces data redundancy and improves data integrity in a database.
Prevents data duplication and inconsistencies
Simplifies database maintenance and updates
Improves query performance
Enforces data integrity and consistency
Follows best practices for database design
Examples: breaking down a customer table into separate tables for orders, addresses, and payments
Examples: creating a separate table for product ca...
I am a passionate software engineer with experience in developing web applications and a strong background in computer science.
Experienced in developing web applications using technologies like HTML, CSS, JavaScript, and React
Strong background in computer science with knowledge of algorithms and data structures
Familiar with agile development methodologies and version control systems like Git
I am a problem solver, team player, quick learner, detail-oriented, and have strong communication skills.
Problem solver - I enjoy tackling complex problems and finding innovative solutions.
Team player - I work well with others and value collaboration in achieving goals.
Quick learner - I am able to pick up new technologies and concepts quickly.
Detail-oriented - I pay attention to the smallest details to ensure high-qual...
Yes, I have a Bachelor's degree in Computer Engineering.
Bachelor's degree in Computer Engineering
Experience in software development
Knowledge of engineering principles applied to software design
My day was productive and challenging, with a lot of problem-solving and collaboration.
Completed a major coding project ahead of schedule
Participated in a brainstorming session with team members
Solved a tricky bug in the codebase
Attended a virtual meeting with stakeholders
No, I do not have any relatives in Pune. I have arranged for my accommodation in a rented apartment near the office.
No relatives in Pune
Accommodation arranged in a rented apartment near the office
Yes, My Passion Challenge test is a coding competition for software engineers.
My Passion Challenge test is a coding competition that evaluates the coding skills of software engineers.
It is designed to test problem-solving abilities, algorithmic thinking, and coding proficiency.
Participants are given a set of coding challenges to solve within a specified time limit.
The challenges can range from simple to complex, coveri...
Considering pursuing a Master's degree in Computer Science to deepen knowledge and advance career.
Considering pursuing a Master's degree in Computer Science
To deepen knowledge and advance career
Examples: MS in Computer Science at XYZ University, online courses in AI and Machine Learning
posted on 21 Mar 2015
I was interviewed before Aug 2016.
I was interviewed in Apr 2017.
I am a software developer with a passion for coding and problem-solving. My family is supportive and has always encouraged my career in tech.
Experienced software developer
Passionate about coding and problem-solving
Supportive family that encourages my career in tech
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