Loylogic Interview Questions and Answers

Q1. Find length of substring with longest distinct characters(non-repeating characters) eg - input "abcdab" result - "4(abcd)"
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Q2. Interviewer was not clear on the question herself, here is what i deduced, If you want to build a scheduler service which takes in jobs to run at certain intervals and you cannot use things like cronjob, e...read more
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Q3. Current project and roles and responsibilities. what is the most difficult technical problem you solved, again i think interviewer was lost on the problem i explained.
Ans. 
I worked on a project involving developing a new algorithm for optimizing network traffic. My role was to design and implement the algorithm, as well as test and debug it.
• Researched existing algorithms and identified their limitations

• Designed a new algorithm that addressed the limitations and improved network performance

• Implemented the algorithm in code and tested it in a simulated network environment

• Debugged issues an...read more
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Q4. Scalability question on one of the project i was explaining
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Hacker Rack Test with medium to high difficulty

Q1. Explain your current project
Ans. 
I am currently working on developing a mobile application for tracking fitness goals and progress.
• Developing a mobile app using React Native

• Implementing features such as goal setting, progress tracking, and workout logging

• Integrating with wearable devices like Fitbit for data synchronization
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Q2. Questions about kakfa, ES and Java 8
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Q1. Similar questions on your current project and questions around kafka
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Basic Coding Java and algorithm questions

Q1. Location and work area
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Q2. Basic details in general
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Q1. Current and previous work experience and relevance
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Q2. Territories covered
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Q1. Work experience, relevant experience
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Q2. How can I expand their market
Ans. 
Expanding the market can be achieved through market research, identifying new target demographics, developing new products or services, and implementing effective marketing strategies.
• Conduct market research to identify potential new markets or untapped segments within the current market.

• Analyze competitors to understand their strategies and identify opportunities for differentiation.

• Develop new products or services th...read more
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Q1. Create basic react app with dummy data fetched from JSON API
Ans. 
Create a basic React app with dummy data fetched from a JSON API.
• Set up a new React project using create-react-app

• Create a component to fetch data from a JSON API using fetch or axios

• Display the fetched data in the component
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Q2. Array methods and Flatten array
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Q3. Event loop
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Q4. HTML and Javascript basics
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LLD about Order Notification System

Q1. HLD of Zoomcar and discussing Tradeoff and some Behavioural Questions
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Q1. Interview with VP of Engineering general discussion
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Normal Aptitude and Basics of the Computer Core Questions

Q1. Tell about Yourself
Ans. 
I am a software developer with 5 years of experience in developing web applications using Java, Spring Boot, and Angular.
• 5 years of experience in software development

• Proficient in Java, Spring Boot, and Angular

• Strong problem-solving skills

• Experience working in Agile development environment

• Passionate about learning new technologies
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Q2. Write the code abt the right binary tree?
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Q1. Normal Hr Questions
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Q1. SQL Questions - Constraints- how to optimize long SQL query without changing the output
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Q1. Knowledge about API, ERP, SAP, DBMS, RDBMS, Joins, Normalisation, Codd Rules, Relational Algebra. May ask based on two given tables.
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Q2. JSON, XML, OAuth, REST API, SOAP, GraphQL, HTTP Methods
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Q3. HR questions, basic background, knowledge about B2B, B2C, e-commerce,
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Q1. Details on project, API, procedures of API, knowledge on e-commerce, business aspects of your own projects, Core DBMS, RDBMS, Difference between SQL and NoSQL
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Q2. May give 2 tables and check whether they are normalised or not. If not what should be done. Join them using left join or right join.
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Q3. API, Types of Auth tokens (OAuth, Google Auth, JWT)
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Q4. Procedures of ERP
Ans. 
Procedures of ERP involve defining business processes, configuring the system, testing, training, and ongoing support.
• Define business processes to align with ERP system capabilities

• Configure the ERP system based on defined processes

• Test the system to ensure functionality and data accuracy

• Provide training to users on how to use the ERP system effectively

• Offer ongoing support for system maintenance and troubleshooting
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Q1. Question based on CV
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1 hour - NodeJS Based

Q1. High Level System Design
Ans. 
High level system design involves creating an overall architecture for a software system.
• Identify the main components of the system

• Define the interactions between the components

• Consider scalability, reliability, and performance

• Use diagrams to visualize the design

• Example: Designing a social media platform with user profiles, posts, and messaging functionality
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Q1. Low Level System Design
Ans. 
Low level system design involves designing the internal components of a software system.
• Focus on the architecture of the system at a detailed level

• Consider how different components interact with each other

• Optimize for performance and efficiency

• Think about scalability and maintainability

• Examples: designing a database schema, creating algorithms for data processing
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Q1. Culture Fit Round - Strength, Challenges etc
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