BlackBuck Embedded Engineer Interview Questions and Answers

Given 3 strings S, S1, S2 containgin M, N and k characters respectively, task is to modify string by replaicing all substring S1 with S2 and S

Q1. Given a string, find the longest length palindromic substring in the given string.
Ans. 
Find the longest palindromic substring in a given string.
• Use dynamic programming to solve the problem efficiently.

• Start with the base cases of single characters and two characters.

• For longer substrings, check if the first and last characters match and if the substring between them is also a palindrome.

• Keep track of the longest palindrome seen so far.

• Time complexity: O(n^2), space complexity: O(n^2).
Answered by AI
Add your answer

Q1. Mention the most challenging technical problem you had to solve.
Ans. 
Developing a real-time data processing system for a high-traffic website.
• Designing a scalable architecture to handle the high volume of incoming data.

• Optimizing the data processing algorithms to minimize latency.

• Ensuring data consistency and accuracy in a distributed system.

• Implementing fault-tolerant mechanisms to handle system failures.

• Testing and debugging the system under various load conditions.
Answered by AI
Add your answer
Q2. Some minor low level entity design.
Add your answer

Q1. Create APIs for a Quiz platform
Ans. 
Create APIs for a Quiz platform
• Design RESTful APIs for creating, updating, deleting, and retrieving quizzes

• Include endpoints for managing quiz questions, answers, and user responses

• Implement authentication and authorization mechanisms for secure access

• Utilize JSON format for data exchange between client and server
Answered by AI
Add your answer

Design and code a parking lot application

Q1. Past work and digging around that. few changes in past work and how to implement them.
Add your answer

Q1. How to ensure that there is no data corruption when data is being streamed and processed asynchronously
Ans. 
To ensure no data corruption during asynchronous streaming and processing, use data validation, error handling, and checksums.
• Implement data validation techniques to check the integrity of the streamed data.

• Handle errors and exceptions properly to prevent data corruption.

• Use checksums or hash functions to verify the integrity of the data.

• Implement reliable communication protocols like TCP/IP to ensure data integrity.

• Co...read more
Answered by AI
Add your answer

Hackerrank LeetCode 2 Hard questions and 1 medium