Happiest Minds Technologies Interview Questions, Process, and Tips

Q1. Core Java Spring Boot Microservices REST APIs Kafka Java Coding
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Q1. Java 8 coding SQL coding Scenario based questions on current project Design Patterns
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Q1. Past projects Tricky Java scenario based questions CI/CD experience
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Q1. Salary Negotiation
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Round duration - 30 minutes
Round difficulty - Easy

MCQ's as well some basic coding questions were there in this round

Q1. 
Cycle Detection in a Singly Linked List
Determine if a given singly linked list of integers forms a cycle or not.
A cycle in a linked list occurs when a node's next points back to a previous node in the ...read more
Ans. Outer And Inner Loop
We are going to have two loops outer-loop and inner-loop 
1. Maintain a count of the number of nodes visited in outer-loop.
2. For every node of the outer-loop, start the inner loop from head.
3. If the inner-loop visits the node next to the outer-loop node, then return true, else repeat the process for the next iteration of outer-loop.
4. If outer-loop reaches the end of list or null, then return false.
Space ...read more
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Round duration - 25 minutes
Round difficulty - Easy

Questions on DBMS and OS were asked in this round

Q1. What is the difference between paging and segmentation?
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Q2. What do you mean by FCFS (First-Come, First-Served)?
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Q3. What is the difference between normalization and denormalization in database management systems?
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Round duration - 15 minutes
Round difficulty - Easy

Basic HR questions like why do you want to join this company and some questions on behavioural and resume.

Q1. What is your expectation
Ans. 
I expect clear communication, defined goals, effective teamwork, and successful project completion.
• Clear communication with team members and stakeholders

• Defined project goals and milestones

• Effective teamwork and collaboration

• Successful completion of projects within budget and timeline
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Q2. What do you enjoy working
Ans. 
I enjoy working on challenging projects that require problem-solving and collaboration.
• I thrive in fast-paced environments where I can use my organizational skills to keep projects on track.

• I enjoy working with diverse teams and leveraging each team member's strengths to achieve project goals.

• I find satisfaction in seeing a project come together from start to finish, overcoming obstacles along the way.

• I appreciate the ...read more
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It was for 1 hour..
Mostly multiple choice and 2 coding questions

Q1. They asked 3 coding questions
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Q2. Reverse a string, Max number
Ans. 
Reverse a string and find the maximum number in the string.
• Iterate through the string in reverse order to reverse it.

• Use a variable to keep track of the maximum number found while iterating through the string.

• Convert each character to a number and check if it is greater than the current maximum number.
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