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NielsenIQ

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Interview Questions and Answers

Updated 6 Jul 2024

Q1. [1,1,2,3,4,5,5] remove duplicate from given list

Ans.

Remove duplicates from a given list of numbers

  • Create a new list to store unique elements

  • Iterate through the given list and add elements to the new list if they are not already present

  • Return the new list as the result

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Q2. Coding for Development/Automation

Ans.

Coding for development/automation involves writing efficient and scalable code to automate tasks and improve processes.

  • Understand the problem and identify the best approach for automation

  • Write clean and modular code that is easy to maintain and update

  • Use appropriate tools and frameworks to streamline development

  • Test thoroughly to ensure reliability and accuracy

  • Continuously optimize and improve the automation process

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Q3. What you know about NIELSENIQ?

Ans.

NIELSENIQ is a software quality measurement tool used to evaluate the quality of software products.

  • NIELSENIQ measures software quality based on various factors such as maintainability, reliability, and efficiency.

  • It provides a score that indicates the overall quality of the software product.

  • NIELSENIQ can be used to identify areas of improvement in software development processes.

  • It is commonly used in software engineering and development industries.

  • NIELSENIQ is developed by Ni...read more

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Q4. 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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Q5. 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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Q6. Explain OOPS concept

Ans.

OOPS (Object-Oriented Programming) is a programming paradigm based on the concept of objects, which can contain data and code.

  • OOPS focuses on creating objects that interact with each other to solve a problem

  • It involves concepts like classes, objects, inheritance, polymorphism, and encapsulation

  • Example: Inheritance allows a class to inherit properties and behavior from another class

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Q7. Duplicate in array

Ans.

Find duplicates in an array of strings.

  • Iterate through the array and use a hash set to keep track of seen elements.

  • If an element is already in the hash set, it is a duplicate.

  • Example: ['apple', 'banana', 'apple', 'orange'] should return 'apple' as a duplicate.

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Q8. Reverse of sentence

Ans.

The reverse of a sentence is the words in the sentence in reverse order.

  • Split the sentence into words

  • Reverse the order of the words

  • Join the words back together

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