OnlineSales.ai Software Development Engineer Interview Questions and Answers

DSA Round - Need to explain the answer

1hr, hacker rank, was a good problem to solve

Q1. Last company work profile
Ans. 
I worked as a Senior Software Engineer at XYZ Company.
• Developed and maintained software applications

• Collaborated with cross-functional teams to gather requirements and design solutions

• Implemented new features and enhancements

• Performed code reviews and provided technical guidance to junior developers

• Resolved bugs and issues reported by users

• Optimized application performance and scalability

• Participated in agile developme
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Q2. Dot Net, oracle framework, sql related qu.
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Q1. What is recursive function?
Ans. 
A recursive function is a function that calls itself within its definition.
• A recursive function must have a base case to prevent infinite recursion.

• Recursion is often used to solve problems that can be broken down into smaller, similar subproblems.

• Example: Factorial function, Fibonacci sequence.
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Q2. Difference between c and c++
Ans. 
C is a procedural programming language while C++ is an object-oriented programming language.
• C is a procedural programming language, while C++ is a combination of procedural and object-oriented programming.

• C does not support classes and objects, while C++ does.

• C does not have built-in support for exception handling, while C++ does.

• C does not have namespaces, while C++ does.

• C does not have function overloading, while C++
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Q3. Inheritance and data structures?
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Q1. What are the Oops concepts
Ans. 
Oops concepts are the fundamental principles of object-oriented programming, including inheritance, encapsulation, polymorphism, and abstraction.
• Inheritance: Allows a class to inherit properties and behavior from another class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the complex i...read more
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Q2. How to reverse any string
Ans. 
To reverse a string, iterate through the characters and build a new string in reverse order.
• Iterate through the characters of the string from end to start

• Append each character to a new string to build the reversed string

• Return the reversed string as the result
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Q1. DSA Structures and Tests
Ans. 
Understanding of data structures and algorithms is crucial for software engineering roles.
• Knowledge of common data structures like arrays, linked lists, trees, graphs, etc.

• Understanding of algorithms like sorting, searching, dynamic programming, etc.

• Ability to analyze time and space complexity of algorithms.

• Experience in writing efficient code using data structures and algorithms.

• Familiarity with common data structure ...read more
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Q2. Question on vertx
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Q1. General discussion
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Q1. Java script and output related Questions
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ReactJs assignment related to search bar and pagination