Exzeo Software Software Developer Interview Questions and Answers

Six coding questions to be solved within an hour. The coding questions were standard aptitude based and did not include any complex topics like Dynamic Programming or trees in my case.

Q1. I had to solve a problem. Given an expression involving operators and operands with parentheses, convert it to postfix expression. I used the stack data structure.
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Q1. A puzzle question
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Online coding test having basic problems and some aptitude problem.

Q1. Interviewer will ask opps and 2 basic coding problem 2 aptitude problem if you mention any technology in resume then ask about technology and projects
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Q2. What is opps ?
Ans. 
OOPs stands for Object-Oriented Programming, a programming paradigm based on the concept of objects.
• OOPs focuses on creating objects that contain both data and methods to manipulate that data.

• Encapsulation, inheritance, polymorphism, and abstraction are key principles of OOPs.

• Examples of OOPs languages include Java, C++, and Python.
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Q3. What is singleton class ?
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A singleton class is a class that can only have one instance created and provides a global point of access to that instance.
• Singleton classes are often used for logging, caching, database connections, and thread pools.

• They typically have a private constructor to prevent instantiation from other classes.

• They provide a static method to access the single instance, which is created if it doesn't exist yet.
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The test was very weird one.
They did have planned anything for the test, They came and given a link on bit.ly and given an another link that is in google form for the answers.
And they selection of people for second round is not sensible.

This round was also be a weird.
They give each candidates with different questions.
They told us to write logic on the paper and you can use internet for your reference.
But after this round they announced the results but that is not in genuine one.

Q1. Basic dsa questions predict output
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Medium level problem,

Q1. Based on resume
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45 min apps and technical question

45 min coding round you can refer net for first 15 min

60 Minute Duration on 3 topics, including logical, oop and mathematical

Q1. Resume based questions
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Q2. Event loop in nodejs
Ans. 
Event loop in Node.js manages asynchronous operations by executing callback functions when certain events occur.
• Event loop is responsible for handling I/O operations, timers, and callbacks in Node.js

• It allows Node.js to perform non-blocking operations efficiently

• Event loop continuously checks the event queue for new events to execute
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Q3. Javascript es6 questions
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Q1. Promises in javascript
Ans. 
Promises in JavaScript are objects representing the eventual completion or failure of an asynchronous operation.
• Promises are used to handle asynchronous operations in JavaScript.

• They can be in one of three states: pending, fulfilled, or rejected.

• Promises can be chained using .then() to handle success and .catch() to handle errors.
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