Zopsmart Technology Interview Questions and Answers

It contains 60 aptitude questions at my time.

Q1. Linkedlist replace at ith index
Ans. 
Replace element at specified index in a linked list
• Traverse the linked list to the ith index

• Update the value at that index with the new value

• Handle edge cases like index out of bounds
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Q2. Sum of array except self
Ans. 
Calculate sum of array elements excluding the element itself.
• Iterate through the array and calculate the sum of all elements except the current element.

• Use a temporary variable to keep track of the sum as you iterate through the array.

• Return the final sum after iterating through the entire array.
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Two coding question were asked of medium level.

Q1. Interviewer was friendly and asked DSA related question
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Q1. Advance level round where DSA level was increased.
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Q1. Last F2F round .
Ans. 
The last face-to-face round of the interview process.
• Prepare to discuss your experience and skills in more detail.

• Be ready to answer any final questions the interviewer may have.

• Show enthusiasm and interest in the position and company.

• Ask about next steps in the hiring process.

• Thank the interviewer for the opportunity.
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Q1. Questions on DSA were asked by the interviewer at first.
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Q2. Some theoretical questions from DBMS and oops and also asked to write some SQL queries.
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Q1. This round was also similar to the first technical round at first given a DSA question.
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Q2. After that I was asked to write some SQL queries and also questions from resume were asked.
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Q1. This was managerial round which was was offline in person interview. At first he asked sone basic DBMS and oops questions.
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Q2. Then gave me a question and asked me to write a complex SQL query.
Ans. 
A complex SQL query can involve multiple joins, subqueries, and aggregations to extract meaningful data from relational databases.
• Use JOINs to combine data from multiple tables, e.g., SELECT * FROM Orders JOIN Customers ON Orders.CustomerID = Customers.CustomerID.

• Incorporate GROUP BY to aggregate data, e.g., SELECT COUNT(*), ProductID FROM Orders GROUP BY ProductID.

• Utilize subqueries for filtering, e.g., SELECT * FROM ...read more
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Q1. Tell me about yourself and what is scrum what is agile all basic questions about scrum and the scrum master role !
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Q2. Can you describe your projects and explain how you implemented Agile methodology in your personal projects?
Ans. 
I led multiple personal projects using Agile, focusing on iterative development and team collaboration for effective outcomes.
• Implemented Scrum framework in a personal web development project, conducting daily stand-ups to track progress.

• Used Kanban for a personal fitness tracking app, visualizing tasks on a board to manage workload and prioritize features.

• Conducted sprint reviews and retrospectives after each iteratio...read more
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Q1. Tell me about yourself
Ans. 
I am a software engineer with 5 years of experience in developing web applications using Java, Spring, and Angular.
• 5 years of experience in software development

• Proficient in Java, Spring, and Angular

• Worked on developing web applications
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Q2. Brief about existing project
Ans. 
The existing project is a web application for online shopping.
• The project uses React for the front-end and Node.js for the back-end.

• It integrates with a payment gateway for processing transactions.

• The project includes features like user authentication, product search, and order tracking.
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Q3. Coding question to revert the sentence
Ans. 
The task is to reverse the words in a given sentence while maintaining their order.
• Split the sentence into words using space as a delimiter. Example: 'Hello World' -> ['Hello', 'World']

• Reverse the array of words. Example: ['Hello', 'World'] -> ['World', 'Hello']

• Join the reversed array back into a string with spaces. Example: ['World', 'Hello'] -> 'World Hello'

• Consider edge cases like multiple spaces or punctua...read more
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Q4. SQL query for fetching some info
Ans. 
SQL query to fetch specific information from a database
• Use SELECT statement to specify the columns you want to retrieve

• Use FROM clause to specify the table from which to retrieve the data

• Use WHERE clause to add conditions for filtering the data

• Use JOIN clause to combine data from multiple tables if needed
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Resoning ,time distance,blood relations,synogums

Normal loop based problem statement

Q1. About oops concept
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Q2. About api and types
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Two easy to medium level questions

Q1. Reverse a string
Ans. 
Reverse a string by iterating through the characters and swapping them.
• Create a new string to store the reversed string

• Iterate through the original string from end to start

• Append each character to the new string

• Return the new string as the reversed string
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Q2. First and last occurrence of an element in a sorted array
Ans. 
Find the first and last occurrence of an element in a sorted array.
• Use binary search to find the first occurrence of the element.

• Modify binary search to find the last occurrence of the element.

• Handle cases where the element is not found in the array.
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