Niveus Solutions (Part of NTT Data) Cloud Engineer Interview Questions and Answers

Round duration - 40 minutes
Round difficulty - Medium

Asked about time complexity of algorithm, puzzles, DBMS, cutting edge technologies etc. What are indexes?

Q1. 
Flip Bits Problem Explanation
Given an array of integers ARR of size N, consisting of 0s and 1s, you need to select a sub-array and flip its bits. Your task is to return the maximum count of 1s that can b...read more
Ans. 
Given an array of 0s and 1s, find the maximum count of 1s by flipping a sub-array at most once.
• Iterate through the array and keep track of the maximum count of 1s obtained by flipping a sub-array.

• Consider flipping a sub-array from index i to j and calculate the count of 1s in the resulting array.

• Return the maximum count of 1s obtained by flipping a sub-array at most once.
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Round duration - 20 minutes
Round difficulty - Medium

Asked 1 standard algorithm

Q1. 
Number of Islands Problem Statement
You are provided with a 2-dimensional matrix having N rows and M columns, containing only 1s (land) and 0s (water). Your goal is to determine the number of islands in t...read more
Ans. 
Count the number of islands in a 2D matrix of 1s and 0s.
• Iterate through the matrix and perform depth-first search (DFS) to find connected 1s.

• Mark visited cells to avoid redundant traversal.

• Increment island count whenever a new island is encountered.
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Coding cum aptitude test on Hackerrank

Q1. First round interview . Consisted questions based on projects , dsa
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Q1. Round 2 . Question based from core technology. Micro services , etc
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Q1. Basic hr questions . Why are you fit for this role kind of things
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60 MCQ questions are there

Q1. Simple java questions are there
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Q2. Array list vs Linked List
Ans. 
Array list is faster for accessing elements by index, while Linked List is better for frequent insertions and deletions.
• Array list has constant time access to elements by index, while Linked List requires traversing the list to find an element.

• Linked List is better for frequent insertions and deletions as it only requires changing pointers, while Array list may require shifting elements.

• Array list uses contiguous memor...read more
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Questions based on cloud computing and mulesoft were there

Same cloud computing and mulesoft based questions

Q1. One coding question
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