Rolta India Interview Questions and Answers

Data structures are a way to organize and store data efficiently.

• Data structures are used to store and manipulate data in a structured manner.

• They provide different ways to access and perform operations on the data.

• Examples include arrays, linked lists, stacks, queues, trees, and graphs.

Developed a web-based project management tool for tracking tasks and deadlines

• Used React.js for front-end development

• Implemented RESTful APIs using Node.js and Express for back-end

• Utilized MongoDB for database management

• Incorporated user authentication and authorization features

• Integrated real-time notifications using Socket.io

My name is John Smith.

• Full name is John Smith

• Common name in English-speaking countries

• Easy to remember and pronounce

The question is unrelated to the medical field and is not a puzzle or riddle.

• The question is asking about the meaning of the interviewer's name.

• You can ask the interviewer about the origin or cultural significance of their name.

• You can also mention that names often have different meanings in different languages or cultures.

My strengths include problem-solving skills, attention to detail, and strong communication abilities.

• Strong problem-solving skills - I enjoy tackling complex issues and finding creative solutions.

• Attention to detail - I am meticulous in my work and strive for accuracy in all tasks.

• Strong communication abilities - I can effectively convey ideas and collaborate with team members.

I am a software developer with a passion for coding and problem-solving. My family is supportive and has always encouraged my career in tech.

• Experienced software developer

• Passionate about coding and problem-solving

• Supportive family that encourages my career in tech

Yes, I can remove all the pcs from the lab and keep them in another lab right now.

• Ensure all the necessary equipment and tools are available for the move

• Coordinate with the lab staff to ensure a smooth transition

• Label and document each PC for easy identification and setup in the new lab

• Ensure proper packaging and handling to prevent any damage during the move

Fibonacci series is a sequence of numbers where each number is the sum of the two preceding ones.

• The first two numbers of the series are always 0 and 1

• The next number is the sum of the previous two numbers

• The series goes on infinitely: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, ...

• Pseudo code: 1. Initialize variables a=0, b=1, c=0 2. Print a and b 3. Repeat steps 4-6 until desired number of terms 4. c=a+b 5. Pr

Algorithm for matrix multiplication

• Create a result matrix with dimensions of the two input matrices

• Iterate through each row and column of the result matrix

• For each element in the result matrix, multiply corresponding row in first matrix with corresponding column in second matrix

• Add the products obtained in the previous step to get the final value for the element

I worked on a project that involved sentiment analysis of customer reviews using Naive Bayes algorithm.

• The project involved collecting customer reviews from various sources.

• Preprocessing the data by removing stop words, stemming, and tokenizing.

• Used Naive Bayes algorithm for sentiment analysis.

• The algorithm was chosen because of its simplicity and effectiveness in text classification tasks.

• The accuracy of the model was