Storable Software Development Engineer II Interview Questions and Answers

Q1. What is event loop
Ans. 
Event loop is a mechanism that allows for asynchronous programming by handling and executing events in a loop.
• Event loop is a part of the runtime environment that continuously checks the event queue and executes the callback functions associated with those events.

• It allows for non-blocking I/O operations, making it possible to handle multiple events concurrently.

• Event loop is commonly used in JavaScript for handling as...read more
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Data Structures and Algorithms

Q1. Questions on system design
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Q1. Cultural fit and work experience
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Q1. Angular structure
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Q2. Dependency injection
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Q1. Manageral questions
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Q2. Scenario based questions
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Q1. Package discussion
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Mostly questions on logical aptitude

Q1. DSA questions. Reverse word of string, bubble sort, swap two variables without use of third variable
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Q2. OOPs concepts also some questions on project
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Q3. 1 puzzle (refer gfg)
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Q1. Why do you want to work at our company?
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Q2. What was the toughest challenge you have ever faced?
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Q1. OOP concepts in Deep
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OOP concepts in Deep
• OOP (Object-Oriented Programming) concepts include encapsulation, inheritance, and polymorphism

• Encapsulation involves bundling data and methods that operate on the data into a single unit (object)

• Inheritance allows a class to inherit properties and behavior from another class

• Polymorphism allows objects of different classes to be treated as objects of a common superclass
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Q2. .Net Question and SQL Basics
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Q1. More OOP questions and their implemenations
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Q2. Scenario based coding problem
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Q1. Design patterns and Implementation
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Design patterns are reusable solutions to common problems in software design and implementation.
• Design patterns help in creating flexible, maintainable, and scalable software systems.

• Examples of design patterns include Singleton, Factory, Observer, and Strategy.

• Each design pattern has a specific problem it solves and a set of guidelines for its implementation.
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Q2. Full project architecture implementation
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Full project architecture implementation involves designing the overall structure of a software project.
• Identify the requirements and constraints of the project

• Design the high-level architecture including components, modules, and interactions

• Consider scalability, performance, security, and maintainability

• Choose appropriate technologies and frameworks

• Implement the architecture following best practices

• Test and validate t...read more
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Q1. A simple linked list question
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Q1. Detect cycle in undirected graph
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Medium to hard questions based on arrays, dp

Q1. Quick sort algorithm
Ans. 
Quick sort is a popular sorting algorithm that uses divide and conquer strategy.
• Divides array into smaller sub-arrays based on a pivot element

• Recursively sorts sub-arrays

• Combines sorted sub-arrays to get final sorted array

• Time complexity: O(n log n) on average, O(n^2) worst case

• Example: [3, 6, 8, 10, 1, 2, 1] -> [1, 1, 2, 3, 6, 8, 10]
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Q2. Modified rotate a matrix
Ans. 
Rotate a matrix by 90 degrees in place
• Transpose the matrix

• Reverse each row of the transposed matrix
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