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CoinTribe Software Engineer Interview Questions and Answers
CoinTribe Software Engineer Interview Experiences
1 interview found
Vinayak Pevekar
(2 Questions)
- Q1. What is Vector? How it is different from arrays?
- Ans.
Vector is a dynamic array that can resize itself. It differs from arrays in its ability to change size during runtime.
Vectors are implemented as dynamic arrays, whereas arrays are static.
Vectors can resize themselves during runtime, whereas arrays have a fixed size.
Vectors can be used to store objects of any type, whereas arrays can only store objects of a specific type.
Vectors have built-in functions for easy manipula...
- Q2. What is an abstract class?
- Ans.
An abstract class is a class that cannot be instantiated and is used as a base class for other classes.
An abstract class can have abstract and non-abstract methods.
Abstract methods are declared but not implemented in the abstract class.
A non-abstract class that inherits from an abstract class must implement all abstract methods.
An abstract class can have constructors and fields like a regular class.
An abstract class ca...
Interview Preparation Tips
Skills evaluated in this interview
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Interview questions from similar companies
Anonymous
Interview Questionnaire
2 Questions
- Q1. Coding skills checked
- Q2. Get the 3rd highest salary from the table
- Ans.
To find the 3rd highest salary, we can use SQL queries to retrieve distinct salary values and order them.
Use SQL query: SELECT DISTINCT salary FROM employees ORDER BY salary DESC LIMIT 1 OFFSET 2;
This query selects distinct salaries, orders them in descending order, and skips the first two to get the third highest.
Ensure the table has enough distinct salaries; otherwise, the query may return NULL.
Selected
I applied via Campus Placement and was interviewed before Aug 2022. There were 4 interview rounds.
Technical MCQs (OS, CN, etc.), 2 coding questions (medium level)
(2 Questions)
- Q1. Leetcode - Rainwater Harvesting
- Q2. Leetcode - Array/String
(2 Questions)
- Q1. HR + Resume Review (Technical)
- Q2. Explain Projects/Experience
Interview Preparation Tips
- DSA
Practice DSA.
I applied via Campus Placement and was interviewed in Dec 2023. There were 2 interview rounds.
In round 1 we could only use Java
(1 Question)
- Q1. Interviewers are very friendly. Mostly the questions were based on SQL, dsa
Selected
I applied via Approached by Company and was interviewed in Aug 2024. There were 4 interview rounds.
(4 Questions)
- Q1. Smallest difference pair of values between two unsorted arrays
- Ans.
Find the smallest difference pair of values between two unsorted arrays.
Sort both arrays and compare elements to find the smallest difference.
Use two pointers approach to iterate through both arrays simultaneously.
Consider edge cases like empty arrays or arrays with only one element.
- Q2. 2D matrix iteration based question
- Q3. What is normalisation in DBMS?
- Q4. What is the difference between SQL and NoSQL?
(1 Question)
- Q1. Design Dream 11 application in high level.
- Ans.
Dream 11 is a fantasy sports platform where users can create their own teams and compete in various sports leagues.
User registration and login functionality
Ability to create and join contests
Player selection and team creation feature
Real-time scoring and leaderboard updates
Integration with payment gateway for transactions
(1 Question)
- Q1. Explain your recent project in your current company.
(2 Questions)
- Q1. Why do you want to join Yubi and leave Tavant?
- Ans.
I am excited about the innovative projects at Yubi and believe it aligns better with my career goals.
Yubi offers more opportunities for growth and learning in cutting-edge technologies.
I am drawn to Yubi's company culture and values, which resonate with my own.
I see Yubi as a better fit for my long-term career aspirations compared to Tavant.
- Q2. What process do you follow to switch to a new technology?
- Ans.
I follow a structured approach to evaluate the new technology, learn it through online resources or courses, practice with small projects, and gradually incorporate it into larger projects.
Research the new technology to understand its features, benefits, and use cases
Take online courses or tutorials to learn the basics of the technology
Practice by working on small projects or side projects to gain hands-on experience
Gr...
Interview Preparation Tips
- System Design
- Data Structures
- Algorithms
- DBMS
Skills evaluated in this interview
shalini RM
Selected
I appeared for an interview before Jun 2024, where I was asked the following questions.
- Q1. Pandas based questions
- Q2. Sql with group by
(1 Question)
- Q1. Tech concepts and algo
(1 Question)
- Q1. Startup mindset
(1 Question)
- Q1. Speed and quality
Interview Preparation Tips
I applied via Company Website and was interviewed in Dec 2022. There were 3 interview rounds.
Coding test was conducted in hacker earth
(2 Questions)
- Q1. In technical interview they asked the current company work and asked the Instagram db design and usecases and api response of the comment section
- Q2. They asked about the coding test question in round 1
Interview Preparation Tips
They are preferred only product company employee. Selecting 1 employee out of 100
I applied via Company Website and was interviewed in Jan 2021. There were 5 interview rounds.
Interview Questionnaire
2 Questions
- Q1. Basics of Data structures
- Q2. Basics on oops
- Ans.
Object-Oriented Programming (OOP) is a programming paradigm based on objects and classes, promoting code reusability and organization.
Encapsulation: Bundling data and methods that operate on the data within one unit (e.g., a class).
Inheritance: Mechanism to create a new class using properties and methods of an existing class (e.g., a 'Dog' class inheriting from an 'Animal' class).
Polymorphism: Ability to present the sa...
Interview Preparation Tips
Basic DS Question, Medium level difficulty , followed with some puzzles
(1 Question)
- Q1. System Design : Design in memory Database
- Ans.
Designing an in-memory database involves optimizing data storage and retrieval for fast performance.
Use data structures like hash tables or B-trees for efficient indexing and searching
Implement caching mechanisms to reduce disk I/O and improve read/write speeds
Consider data durability and consistency mechanisms to prevent data loss in case of system failures
(1 Question)
- Q1. Discussion with Manager, on projects/work experience and questions around challenges, more on resume /work experience
Interview Preparation Tips
1st Round DS Question are usually very easy/medium level, can be easily passed.
Don't write in resume which u haven't work on /have no idea abut. cause last round will have a lot of discussion on yopur past projects/experience
Skills evaluated in this interview
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