Lexin India Technology Interview Questions and Answers

Medium leetcode question on array list

Q1. Core java and collections, exceptions and threading
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Q2. Core java collections
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Q3. Multi threading
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Q4. Executor framework
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Q1. Threading related questions
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Round 1 was aptitude round, it consisted of java and c++ snippets and we had to guess the output. Apart from that there were problems on speed, velocity, distance and time. Problems on word-letter patterns were also asked. The aptitude round had 30 questions and time given was 30 minutes.

Aptitude round was the only elimination round. The next following 4 rounds were non-elimination rounds. Coding test included 3 questions - 1 and half hour was given to solve the same. It is fine if you don't perform well here, since it is a non-elimination round. But try to solve 1 and half or 2 questions atleast. The questions were mainly based on 1d arrays, 2D arrays, strings and string arrays.

Q1. Introduce yourself.
Ans. 
I am a recent graduate with a degree in engineering, eager to learn and grow in the field.
• Recent graduate with a degree in engineering

• Passionate about learning and growing in the field

• Eager to apply theoretical knowledge to practical projects
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Q2. Difference between Structure and object oriented languages
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Structure languages focus on procedures and functions, while object-oriented languages focus on objects and classes.
• Structure languages use functions and procedures to manipulate data

• Object-oriented languages use objects and classes to encapsulate data and behavior

• Structure languages are more procedural in nature, while object-oriented languages are more modular and reusable

• Examples of structure languages include C and...read more
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Q3. Explain of OOPS concepts and their real life examples.
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OOPS concepts are fundamental to object-oriented programming and include inheritance, encapsulation, polymorphism, and abstraction.
• Inheritance: A child class inherits properties and behaviors from a parent class. Example: Animal class can be a parent class with child classes like Dog and Cat inheriting its attributes.

• Encapsulation: Bundling data and methods that operate on the data into a single unit. Example: A car ob...read more
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Q4. What is static keyword and it's usage.
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The static keyword in programming is used to declare variables, functions, or classes that retain their values or state throughout the program's execution.
• Static variables retain their values between function calls

• Static functions can only be accessed within the same file

• Static classes cannot be instantiated and have limited visibility

• Static keyword can also be used in C++ to declare class members shared among all inst
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Q5. System architecture diagram for web application project.
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The system architecture diagram for a web application project visually represents the components and their interactions.
• Include components like client-side interface, server-side application, database, and external services

• Show how these components communicate with each other

• Consider scalability, security, and performance in the design

• Use standard symbols and notations for clarity
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Q6. Access Modifiers in java
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Access modifiers in Java control the visibility of classes, methods, and variables.
• There are four types of access modifiers in Java: public, private, protected, and default.

• Public: accessible from any other class.

• Private: only accessible within the same class.

• Protected: accessible within the same package and subclasses.

• Default: accessible only within the same package.

• Example: public class MyClass { private int myVar; p
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Q7. What OOPS concepts are implemented in my project
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Encapsulation, Inheritance, Polymorphism, Abstraction
• Encapsulation: Data hiding and bundling of data with methods. Example: Using private variables and public methods.

• Inheritance: Reusing code and creating a hierarchy of classes. Example: Subclass inheriting properties and methods from a superclass.

• Polymorphism: Ability to present the same interface for different data types. Example: Method overloading and overriding.

• A...read more
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Q8. DBMS core concepts
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Q9. Overloading and Overriding
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Q10. Approach to the coding questions asked in coding round.
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Q11. Questions on what is cloud and what are some cloud platforms you know?
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A project is assigned to a group of students and we need to come up with an idea on how to implement that project as a team.

Q1. Introduce yourself
Ans. 
I am a recent graduate with a degree in engineering, eager to learn and grow in the field.
• Recent graduate with a degree in engineering

• Passionate about learning and growing in the field

• Eager to apply theoretical knowledge to practical projects
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Q2. Family background
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Q1. This round was purely based on DSA. One question of Leetcode hard difficulty was asked. Question Name - Median of two sorted arrays.
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Q1. This was low level design round. I was asked to design a system like Redbus. Functional Requirements - 1. user can login/signup on the platform 2. functionality to choose btw different operational routes....read more
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Q1. This round was taken by their Engineering Director. Questions were related to multithreading, types of entity relationships with examples, transaction management in Spring Boot, JVM components, garbage col...read more
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Q2. Later interviewer asked me to code a multithreading assignment - 1. Create a fixed threadpool of size 10. 2. Submit number of tasks to the threadpool. 3. Return the results from every task and print in mu...read more
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Q1. Introduction, be prepared to have knowledge on your resume
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Q2. Mathematical questions like percentage
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Q3. Critical thinking. They asked a question with a given situation what you'll do .
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Q4. The past 4 days been climate be stroming . And current was cut off due to rain and flood , you have a important assignment to finish, what you'll do
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Q1. Types of Chunking in data preparation in RAG
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Q2. How Embedding works in Vector Databases
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Q3. Explain ARIMA model
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Q4. How can we decide to choose Linear Regression for a business problem
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Q1. What is token and it's limit for Open Source LLMs
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Q2. Difference of a Regression and Time Series problem
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Q3. Advantage of LSTM over RNN
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Q4. Performance Metrics for Logistic Regression
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Q1. Basic questions on python
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Q2. Difference between list tuple
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Lists and tuples are both data structures in Python, but lists are mutable while tuples are immutable.
• Lists are enclosed in square brackets [], while tuples are enclosed in parentheses ().

• Lists can be modified after creation, while tuples cannot be modified (immutable).

• Lists are typically used for collections of similar items, while tuples are used for fixed collections of items.

• Example: list = [1, 2, 3] and tuple = (4
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Q3. Area of room 6D
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The area of a room can be calculated by multiplying the length by the width.
• Calculate the area by multiplying the length and width of the room.

• For example, if the length of the room is 10 feet and the width is 12 feet, the area would be 120 square feet.

• Make sure to use the same units for length and width when calculating the area.
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Q4. Most emberacing situation u faced in your life
Ans. 
Getting caught cheating on a test in high school
• Was copying answers from a classmate during a test

• Teacher caught me and called me out in front of the whole class

• Felt embarrassed and learned my lesson about cheating
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Q5. Behavior questions like what will u do if this happens
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The test will comprise a total of 60 questions, divided as follows: 70% of the questions will focus on finance and accounting, while the remaining questions will cover aptitude and English.

Q1. Zero coupon bonds, long-term liabilities, return on equity, debt-equity ratio, captial budgeting and techniques, bonds and its types, debt instruments meaning, collateral, mortgage, spin off, demerger, mer...read more
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Q1. Tell me about your self
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Q2. Tell me about your experience
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Q3. How to know chola
Ans. 
Chola can be known through various methods such as historical records, archaeological findings, and cultural practices.
• Study historical records and documents related to the Chola dynasty

• Explore archaeological sites and artifacts associated with the Chola civilization

• Learn about the cultural practices, art, and architecture of the Chola period

• Consult experts and scholars in the field of Chola history and culture
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Q4. Do you have any experience about loan sales
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Q5. How to handled pressure
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I handle pressure by staying organized, prioritizing tasks, and maintaining a positive attitude.
• Stay organized by creating to-do lists and setting deadlines

• Prioritize tasks based on urgency and importance

• Maintain a positive attitude by focusing on solutions rather than problems
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Q6. How to manage travelling
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Managing travelling involves proper planning, organization, and time management.
• Create a detailed itinerary with travel dates, times, and locations.

• Pack efficiently and only bring necessary items to avoid overpacking.

• Utilize travel apps and tools to stay organized and informed.

• Stay flexible and be prepared for unexpected delays or changes in plans.

• Prioritize rest and self-care to avoid burnout during travel.

• Stay connec...read more
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Q7. Do you have experience of pure field work
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