Tech Vedika Software Engineer Interview Questions and Answers for Freshers

Round duration - 90 minutes
Round difficulty - Medium

In this round 3 coding question were asked. 
1 - algorithm based ( medium) 
2- array based ( easy) 
3- string based (easy)

Q1. 
Ways To Make Coin Change
Given an infinite supply of coins of varying denominations, determine the total number of ways to make change for a specified value using these coins. If it's not possible to make...read more
Ans. 
The task is to determine the total number of ways to make change for a specified value using given denominations.
• Create a dynamic programming table to store the number of ways to make change for each value up to the target value.

• Iterate through each denomination and update the table accordingly based on the current denomination.

• The final value in the table will represent the total number of ways to make change for the ...read more
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Q2. 
Left Rotations of an Array
You are given an array consisting of N elements and need to perform Q queries on that array. Each query consists of an integer indicating the number of elements by which the arr...read more
Ans. 
Perform left rotations on an array based on given queries.
• Create a function that takes the array, number of elements, number of queries, and the queries as input.

• For each query, rotate the array by the specified number of elements to the left.

• Return the final array after each rotation query.
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Q3. 
Chocolate Distribution Problem
You are given an array/list CHOCOLATES of size 'N', where each element represents the number of chocolates in a packet. Your task is to distribute these chocolates among 'M'...read more
Ans. 
The task is to distribute chocolates among students such that the difference between the largest and smallest number of chocolates is minimized.
• Sort the array of chocolates packets

• Use sliding window technique to find the minimum difference between the largest and smallest number of chocolates distributed to students

• Return the minimum difference
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Round duration - 90 minutes
Round difficulty - Easy

Involved some basic question based on DSA and Java script framework and project discussion

Q1. What are some basic questions you were asked about JavaScript?
Ans. 
Basic questions about JavaScript in a software engineering interview
• Explain the difference between '==' and '===' operators

• What is closure in JavaScript?

• How does prototypal inheritance work in JavaScript?

• What is event delegation in JavaScript?

• How do you handle asynchronous operations in JavaScript?
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Q2. MYSQL query
Questions on mysql and database.
Ans. 
The question is about MYSQL query and database.
• Understand the database schema before writing the query

• Use proper indexing to optimize query performance

• Avoid using SELECT * and only fetch necessary columns

• Use WHERE clause to filter results based on conditions
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Q3. Can you describe the projects listed on your resume?
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Q4. Node js basic question
Questions on basic node js concepts.
Ans. 
Node.js is a runtime environment that allows you to run JavaScript on the server side.
• Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient.

• It is commonly used for building server-side applications, APIs, and real-time web applications.

• Node.js is built on the V8 JavaScript engine and uses an event loop for handling asynchronous operations.

• Modules in Node.js are reusable pieces of ...read more
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Round duration - 30 minutes
Round difficulty - Easy

It was the CTO round involving some technology based questions