Meaww.com Interview Questions and Answers

Coding test with 2 questions

Q1. Technical interview round
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Dsa question about maps

Q1. Design robotic restaurant
Ans. 
Robotic restaurant design for automated food preparation and delivery
• Implement robotic arms for cooking and food preparation

• Utilize conveyor belts for transporting dishes to customers

• Incorporate automated order taking and payment systems

• Design a user-friendly interface for customers to place orders and customize meals

• Ensure efficient cleaning and maintenance processes for the robots
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Q2. How to achieve fault tolerance
Ans. 
Achieve fault tolerance by implementing redundancy, monitoring systems, and graceful degradation.
• Implement redundancy by having backup systems in place to take over in case of failure

• Monitor systems continuously to detect faults and address them proactively

• Use graceful degradation to ensure that the system remains functional even if certain components fail
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Design coupon system based on reqs

Q1. Brute force algo
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Q2. Cdn type questions
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Best Time to sell and buy stock

Q1. Promises, closures, hoisting in JS
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Q2. Classes and Object Prototyping
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Q1. How nodejs works internally?
Ans. 
Node.js is a runtime environment that executes JavaScript code outside of a web browser.
• Node.js uses the V8 JavaScript engine from Google Chrome to execute code.

• It is built on the event-driven, non-blocking I/O model, making it lightweight and efficient.

• Node.js uses a single-threaded event loop to handle multiple concurrent connections.

• It has a built-in module system that allows developers to easily add functionality t
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Q2. Std input output questions of js
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Q1. Basic HTML, CSS, JS, React
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HLD, LLD, basic HTML, CSS, react, web optimization, web-performance

Q1. Discussions with potential teammates and Product owner,
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Q1. Conventional Managerial Question
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There were 3 coding questions on Hacker Earth platform for 1 hour 15min and 1 question from array and 2 questions from strings.

Q1. This round was based on SQL, DBMS, DSA, OOPS SQL--> Designed the complete schema for one of my projects for COVID-19 vaccination. and SQL queries from that schema. DSA--> 1.) Find the pair in an array whos...read more
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Q1. This was a technical managerial round. OOPS--> Example of overloading and overriding. Mostly DBMS and SQL-based questions like what is indexing and SQL queries and joins. DSA--> 1.) Write one sorting algo....read more
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Q1. Just a normal discussion regarding my tech stack and my internship experience only 15mins.
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It was a 90 minute coding test, involving 3 problems:
1-Given points on a 2d plane, you can delete one point, what is the minimum maximum distance you can have?
2-LFU Cache
3-Given an array with elements 0,1, your task is to find number of ways to divide this array into contiguous chunks so that each chunk has only one 1 in it.

Q1. How do you avoid method overriding?
Ans. 
To avoid method overriding, make the method final or private.
• Declare the method as final to prevent it from being overridden in subclasses.

• Declare the method as private to hide it from subclasses.

• Use the @Override annotation to ensure that a method is actually overriding a superclass method.
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Q2. What is the 'finalize' keyword for?
Ans. 
The 'finalize' keyword is used in Java to perform cleanup operations before an object is garbage collected.
• The 'finalize' method is called by the garbage collector before reclaiming an object's memory.

• It can be used to release resources like closing files or sockets.

• It is not recommended to rely on 'finalize' for resource cleanup as it is not guaranteed to be called.
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