Shopclues Software Development Engineer Intern Interview Questions and Answers

There were 2 questions, first one was the three sum problem of leetcode and the second one was related to stacks amd strings

Q1. What is encapsulation in OOP?
Ans. 
Encapsulation is the concept of bundling data and methods together within a class, hiding internal details from the outside world.
• Encapsulation helps in achieving data abstraction and data hiding.

• It allows for better control over the access to the internal state of an object.

• By encapsulating data, we can protect it from being modified by external code.

• Encapsulation promotes code reusability and maintainability.

• Example:...read more
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Find min and max in an array

Easy to medium questions, Questions on DSA and Node.js.

Q1. Valid parenthesis
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Q2. Three sum problem
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Q1. The question was about Nodejs
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Q2. The question was to build a linked list in Nodejs
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Q1. The first question was related to DSA
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Q2. The question was related to SQL
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Q1. How was your previous organization
Ans. 
My previous organization was a fast-paced tech startup focused on developing cutting-edge software solutions.
• Highly collaborative work environment

• Emphasis on innovation and creativity

• Agile development methodologies were followed

• Regular team meetings and code reviews

• Opportunities for professional growth and learning
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Q2. Please create timer using react
Ans. 
Create a timer using React
• Use useState hook to store the timer value

• Use useEffect hook to update the timer every second

• Display the timer value in the component's render method
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Q1. He asked to invert a binary tree
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Q2. Deep dive in projects
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Q3. Asked me indept js questions
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Q1. Code postorder traversal without using recursion.
Ans. 
Iterative solution using a stack to perform postorder traversal.
• Use a stack to simulate the recursive call stack.

• Push nodes in the order of right, left, root.

• Pop nodes from stack and add to result array.

• Repeat until stack is empty.
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Q2. Leetcode Problem 1626 - Best team with no conflicts.
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Q1. Design whatsapp with one to one, group messaging and read receipts functionalities. Design the database.
Ans. 
Design a messaging app like WhatsApp with one-to-one, group messaging, and read receipts functionalities.
• Use a relational database to store user information, messages, and group memberships.

• Create tables for users, messages, groups, and group memberships.

• Include columns for message content, sender, receiver, timestamp, and read status.

• Implement a feature to mark messages as read with read receipts.

• Use indexes for effic
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Q2. Questions on dbms, cn and os.
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