NielsenIQ Interview Questions, Process, and Tips

Coding platform: Codility, 3 questions, 1 easy and 1 medium and 1 hard,

Q1. Print all palindromes of a string
Ans. 
Print all palindromes of a string
• Iterate through all substrings of the input string

• Check if each substring is a palindrome by comparing it with its reverse

• Store palindromes in an array and return it
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Q2. Merge sort implementation
Ans. 
Merge sort is a divide and conquer algorithm that recursively splits an array into halves, sorts them, and then merges them back together.
• Split the array into two halves

• Recursively sort each half

• Merge the sorted halves back together
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Q1. Project discussions
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Coding challenge in Pandas and NumPY was the first round. Then it was followed by a general discussion

Q1. Tell me about your last project
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Q2. Do you have experience in sentiment analysis
Ans. 
Yes, I have experience in sentiment analysis.
• I have worked on sentiment analysis projects using natural language processing techniques.

• I am familiar with tools like NLTK, TextBlob, and VADER for sentiment analysis.

• I have experience in analyzing social media data to determine sentiment towards a brand or product.
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Q1. What is your expected CTC
Ans. 
My expected CTC is negotiable based on the role, responsibilities, and benefits offered.
• My expected CTC is based on industry standards and my level of experience.

• I am open to discussing the salary range during the interview process.

• I am looking for a competitive salary package that aligns with my skills and qualifications.
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Apti round had English and aptitude related easy questions.

Mostly easy or medium level question, 2 problems.

Q1. Java, Oops, dbms, 1 puzzle and 2 dsa questions
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Multiple choice with quantitative and verbal section

Two groups were created with 1 topic thrown at each group and 1 minute to prepare

Q1. What are the types of methodologies
Ans. 
Types of methodologies include qualitative, quantitative, mixed methods, and action research.
• Qualitative methodology focuses on understanding human behavior and experiences through methods like interviews and observations.

• Quantitative methodology involves collecting numerical data and analyzing it statistically.

• Mixed methods combine qualitative and quantitative approaches to provide a comprehensive understanding of a r...read more
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Q2. What is primary research
Ans. 
Primary research involves collecting data directly from original sources.
• Involves collecting data directly from original sources

• Can include surveys, interviews, observations, and experiments

• Helps in obtaining specific and targeted information

• Often more time-consuming and expensive compared to secondary research
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