Merkur Gaming India Developer Associate Interview Questions and Answers

Coding related to java collections

Q1. Familiar with Design patterns ?explain few
Ans. 
Design patterns are reusable solutions to common problems in software design.
• Design patterns help in creating maintainable and scalable code.

• Examples of design patterns include Singleton, Factory, Observer, and Strategy.

• Singleton pattern ensures a class has only one instance and provides a global point of access to it.

• Factory pattern creates objects without specifying the exact class of object that will be created.

• Obse...read more
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Q2. What is Mutilthreading,explain with examples
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Multithreading is the ability of a CPU to execute multiple threads concurrently, allowing for improved performance and responsiveness.
• Multithreading allows multiple tasks to be executed simultaneously on a single CPU.

• Each thread has its own stack and program counter, but shares the same memory space.

• Examples include running multiple processes in a web server, handling user input while performing background tasks, and p
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Q1. 2 DSA questions was asked and Java Questions
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Q1. Questions on Kafka, Scalability
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Q1. Questions releated to past projects and Cassandra
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Aptitude and programming language like c and also data structures alogirithm

Q1. SQL questions on joins and project
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Q2. Join two tables using joins in sql
Ans. 
Joining two tables in SQL using JOINs to combine data based on a related column
• Use INNER JOIN to return rows when there is at least one match in both tables

• Use LEFT JOIN to return all rows from the left table and the matched rows from the right table

• Use RIGHT JOIN to return all rows from the right table and the matched rows from the left table

• Use FULL JOIN to return rows when there is a match in one of the tables
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One hour aptitude test based on the mathematics ,logical reasoning.

Q1. One basic question on the language you know and one SQL is asked
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Q2. SQL query questions
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Round duration - 90 Minutes
Round difficulty - Medium

The first round was scheduled in the evening time.
First of all interviewer introduced himself and after my introduction 
He directly shoot first DSA question. The question was easy but conceptual. I have solved some question with same concept and he ask me to share the screen and code in online compiler. Finally I was able to get correct output with all the use cases and I was like "Half work done!"
Then he asked me very core concepts of JavaScript along with that Some Output based questions.
Then finally he asked me theory questions on React along with my experience in React. 
The interviewer was very helpful as well as polite. I don't think if he will not help me during interview I could crack the interview

Q1. 
Is the Sentence a Pangram?
Ninja is relocating to a place called NinjaGram, and for school admission, he is required to identify if a given sentence is a pangram. Your task is to assist Ninja in determini...read more
Ans. 
Step 1 : I have used hashing concept to map occurrence of english alphabet.
Step 2 : I used Counter array with size 26 to find count of every alphabet. 
Step 3 : Traverse the array and if it's panagram append the output string with 1 else 0
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Q1. 4 Coding question to be solve live
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