HCL Infosystems Data Analytics Intern Interview Questions and Answers

Case study - prize optimization problem

Q1. Structured vs unstructured data
Ans. 
Structured data is organized and easily searchable, while unstructured data lacks a predefined format.
• Structured data is organized into rows and columns, like a database.

• Unstructured data includes text documents, images, videos, and social media posts.

• Structured data is easier to analyze and query, while unstructured data requires more advanced techniques like natural language processing.

• Examples of structured data inc...read more
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Aptitude tests are often used to assess academic potential or career suitability and may be used to assess either mental or physical talent in a variety of domains.

Coding testIn this Tutorial, we have Provided the Most Common Coding Interview Questions & Answers with Program Logic & Code Examples for you to Practice Programming:

Programming tests to help you hire better developersWhat is a Coding Challenge?If you are looking to land one such job, it is important that you are well-prepared for these challenges.

An aptitude test is a standardized assessment designed to measure a person's ability or potential to perform specific tasks or acquire certain skills. While the exact details of an aptitude test can vary depending on the purpose and the organization conducting it, here are some common elements and areas that may be covered in an aptitude test:

Numerical Reasoning: This section assesses your ability to work with numbers, perform calculations, interpret data presented in graphs or charts, and solve mathematical problems.

Verbal Reasoning: This section evaluates your language skills, including reading comprehension, vocabulary, grammar, and logical reasoning based on written passages or statements.

Logical Reasoning: This section tests your ability to analyze patterns, sequences, and logical relationships. You may be presented with a series of shapes, symbols, or diagrams and asked to identify the next item in the sequence or identify the pattern.

Abstract Reasoning: This section measures your ability to think conceptually and find relationships between abstract shapes, patterns, or figures.

Spatial Reasoning: This section assesses your ability to mentally manipulate objects in three dimensions, visualize rotations or transformations, and understand spatial relationships.

Data Interpretation: This section evaluates your ability to analyze and interpret data presented in the form of tables, graphs, or charts.

Critical Thinking: This section tests your ability to analyze arguments, identify assumptions, draw conclusions, and evaluate logical validity.

Problem Solving: This section assesses your ability to approach and solve complex problems by breaking them down into smaller steps, identifying relevant information, and applying logical reasoning.

Personality Traits: Some aptitude tests may include personality assessments to evaluate your behavioral preferences, work style, and interpersonal skills.

It's important to note that different organizations may have their own variations and combinations of these sections. The test format can vary as well, including multiple-choice questions, fill-in-the-blank responses, or interactive simulations.

To get more specific details about an aptitude test you're preparing for, it's best to consult the organization or employer conducting the assessment, as they can provide you with the most accurate information and guidance.

A coding test is an assessment designed to evaluate a candidate's programming skills and problem-solving abilities. The details of a coding test can vary depending on the company, position, and programming language or framework being assessed. However, here are some common elements and considerations you might encounter in a coding test:

Programming Languages: The coding test may focus on a specific programming language or allow you to choose from a set of languages. Common choices include Java, Python, C++, JavaScript, or specific frameworks like React or Django.

Test Format: Coding tests can be conducted in different formats. Some companies may provide a set of coding problems or algorithmic challenges that you need to solve within a specific time frame. Others may require you to complete a coding project or build a small application within a given deadline.

Problem Complexity: The coding test may include problems of varying difficulty levels, ranging from basic to advanced. The complexity of the problems can assess your ability to handle different types of challenges and gauge your problem-solving skills.

Problem Domains: The coding test may cover various problem domains, such as data structures, algorithms, string manipulation, mathematical calculations, recursion, dynamic programming, or database operations. The specific domains covered will depend on the job requirements and the company's needs.

Time Constraints: Some coding tests have time limits, meaning you will need to complete the given tasks within a specific timeframe. This is to evaluate your ability to work efficiently and deliver solutions under pressure.

Testing Environment: You may be provided with an online coding platform or an Integrated Development Environment (IDE) where you can write, compile, and run your code. The testing environment may have features like code auto-completion, debugging tools, and test case execution to assist you in coding and testing your solutions.

Test Evaluation: The coding test will typically be evaluated based on the correctness of your code, adherence to given requirements or specifications, code efficiency, readability, and overall quality of your solution. Some tests may also consider factors like code comments, modularity, and error handling.

It's important to note that the specific details and requirements of a coding test can vary significantly from one company to another. If you're preparing for a coding test, it's recommended to review the job description and any provided guidelines thoroughly. Additionally, practicing coding problems, familiarizing yourself with the programming language or framework, and honing your problem-solving skills can greatly enhance your performance in a coding test.

It was good logic building was motive

For skill test , it was just for the flow of our coding knowledge

Q1. Interview questions were asked on my project
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Q2. Asked about features extraction and was given some problems to solved
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Q1. Python questions
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