D2K Technologies India Senior Developer Interview Questions and Answers

Aptitude test

Current affairs

Q1. Puzzle , sql related questions
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Code Snept question with 3-4 Reasoning question. Google form

Pen paper coding round. String , Array . Linkedlist , graph, questions

Q1. Maximum Spaning
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Q2. Nearest Prime number
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To find the nearest prime number, iterate from the given number in both directions until a prime number is found.
• Start iterating from the given number in both directions to find the nearest prime number.

• Check if a number is prime by dividing it by all numbers less than its square root.

• Keep track of the closest prime number found during the iteration.
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Q3. Second Maximum Number in Array
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Q1. Project Question
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Q2. Robot question of DSA
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Q3. Stock Buy and sell - VI . Leetcode Hard
Ans. 
Maximize profit by buying and selling stocks with at most k transactions.
• Use dynamic programming to track profits for each transaction.

• Maintain an array to store maximum profit for each day.

• Example: For prices [3,2,6,5,0,3] and k=2, max profit is 7.

• Consider edge cases like k=0 or prices being empty.
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Q4. Leetcode Medium
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DSA questions such as Map, linked list

Three were basic questions around strings and arrays

Q1. Detailed discussion on data structures and algorithms
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Basic coding question on array and string.

Good question with nice logic

5 question in 1 hour so it's kinda difficult to manage time

Medium level question based on quantitative aptitude

Medium level leetcode questions

Questions based on data structure

Questions based on Data structure