PureSoftware Interview Questions and Answers

Data structures and algorithms, javascript and react questions

Q1. Questions on system design
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Q2. Questions on advanced CI/CD pipeline
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Q1. Discussion on product management
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Q2. State management system
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Q1. It was good they just follow the process asked some simple java question.
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Q2. What is the difference between hashmap and concurrenthashmap
Ans. 
HashMap is not thread-safe while ConcurrentHashMap is thread-safe.
• HashMap is not thread-safe and can lead to ConcurrentModificationException if modified during iteration.

• ConcurrentHashMap allows concurrent read and write operations without the need for external synchronization.

• ConcurrentHashMap achieves thread-safety by dividing the map into segments, allowing multiple threads to operate on different segments concurren...read more
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Q3. SQL question of third highest salary
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To find the third highest salary in a SQL table, use the 'SELECT DISTINCT' statement with 'ORDER BY' and 'LIMIT'.
• Use 'SELECT DISTINCT' to avoid duplicates

• Order the salaries in descending order using 'ORDER BY'

• Use 'LIMIT 2,1' to skip the first two highest salaries and retrieve the third highest salary
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Q1. Overall it was good
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Q2. System design related question design parking lot
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Design a parking lot system that efficiently manages parking spaces and vehicle tracking.
• Define parking lot structure: multiple levels, sections, and types of spaces (compact, standard, handicapped).

• Implement entry and exit points with ticketing or automated systems for tracking vehicles.

• Use sensors or cameras to monitor available spaces in real-time.

• Incorporate a mobile app for users to find available spots and reserv...read more
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Q1. Asked me about the salary expectations
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Q1. Write a Python program to get the smallest integer greater than square root of a given number.
Ans. 
Python program to find smallest integer greater than square root of a given number.
• Use math module to calculate square root of the given number.

• Use math.ceil() function to round up the square root to the nearest integer.

• Add 1 to the rounded up square root to get the smallest integer greater than square root.
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Q2. Write a SQL query to list all the employees with the third highest salary.
Ans. 
SQL query to list employees with third highest salary
• Use the 'ROW_NUMBER()' function to assign a rank to each employee based on salary

• Filter the results to only include employees with a rank of 3
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Q3. What is stemming and lemmatinization?
Ans. 
Stemming and lemmatization are techniques used in natural language processing to reduce words to their base or root form.
• Stemming is the process of reducing words to their base or root form by removing suffixes.

• Example: 'running' becomes 'run' after stemming.

• Lemmatization is the process of reducing words to their base or root form while still ensuring that the reduced form belongs to the language.

• Example: 'better' beco...read more
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Q1. Coding question and mysql query
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Q1. Can you explain your previous projects and the technologies you used?
Ans. 
I worked on various projects using technologies like Java, React, and AWS, focusing on scalable web applications and microservices.
• Developed a web application using React and Node.js for a retail client, improving user engagement by 30%.

• Implemented a microservices architecture with Spring Boot and Docker for a healthcare platform, enhancing scalability.

• Utilized AWS services like S3 and Lambda for a media processing app...read more
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Q2. What is your knowledge of the fintech domain?
Ans. 
Fintech integrates technology with financial services, enhancing efficiency, accessibility, and user experience in finance.
• Digital Payments: Platforms like PayPal and Venmo enable quick and secure transactions.

• Blockchain Technology: Cryptocurrencies like Bitcoin utilize blockchain for secure, decentralized transactions.

• Robo-Advisors: Services like Betterment and Wealthfront use algorithms to provide automated investmen...read more
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Q1. String operation in Tosca Automation
Ans. 
String operations in Tosca Automation involve manipulating and validating strings in test scripts.
• Use functions like 'contains', 'startsWith', 'endsWith' for string validation

• Use 'concatenate' function to combine multiple strings

• Use 'substring' function to extract a portion of a string
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Q2. Join to table and find the highest salay of employee
Ans. 
Join tables to retrieve the highest salary of employees using SQL queries.
• Use SQL JOIN to combine employee and salary tables.

• Utilize the MAX() function to find the highest salary.

• Example query: SELECT MAX(salary) FROM employees JOIN salaries ON employees.id = salaries.employee_id;

• Consider GROUP BY if you need the highest salary per department.
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Q1. What is use of Swift &Objective c? Write code for Tableview Using SwiftUI? RxSwift Vs Swift? What is Optional & Generics ? Protocol Composition related Questions
Ans. 
Swift & Objective-C are programming languages used for iOS development. Tableview in SwiftUI uses List view. RxSwift is a reactive programming framework. Optional & Generics are Swift features. Protocol Composition is combining multiple protocols.
• Swift & Objective-C are used for iOS development

• Tableview in SwiftUI uses List view

• RxSwift is a reactive programming framework for Swift

• Optional allows variables to have a 'no...read more
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