NatWest Group Software Developer Intern Interview Questions and Answers

Q1. Question about the oops and other related
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Q2. Oops concepts in details
Ans. 
Oops concepts refer to Object-Oriented Programming principles like Inheritance, Polymorphism, Encapsulation, and Abstraction.
• Inheritance: Allows a class to inherit properties and behavior from another class.

• Polymorphism: Ability of objects to take on multiple forms.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Abstraction: Hiding the complex implementation details and showing only
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Round duration - 90 minutes
Round difficulty - Medium

Timing - Late in the evening(7pm - 8 pm)
Virtual round, can give from home. 
Had to keep webcam on during the test. 
Tab switching was not allowed, and activity was monitored.

Round duration - 20 minutes
Round difficulty - Medium

Round in the morning, with 2 interviewers.
Questions based on Resume.

Q1. 
Longest Subarray Zero Sum Problem Statement
Given an array of integers arr, determine the length of the longest contiguous subarray that sums to zero.
Input:
N (an integer, the length of the array)
arr (...read more
Ans. 
Find the length of the longest contiguous subarray with zero sum in an array of integers.
• Use a hashmap to store the prefix sum and its corresponding index.

• Iterate through the array and update the hashmap with the current sum and index.

• If the same sum is encountered again, the subarray between the two indices has a sum of zero.
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Round duration - 20 minutes
Round difficulty - Easy

In the afternoon, with 3 recruiters, 2 HRs and 1 project manager.