BlackBuck Software Developer Interview Questions and Answers

Q1. Explain Deadlock?
Add your answer
Q2. Explain Red Black Tree?
Add your answer
Q3. Find local minima in a 1-D array?
Add your answer
Q4. Find local minima in 2-D array?
Add your answer

Q1. LRU Cache - how to tackle
Ans. 
LRU Cache is a data structure that maintains a list of items in order of most recently used to least recently used.
• Implement using a doubly linked list and a hashmap for efficient operations

• When an item is accessed, move it to the front of the list

• When the cache is full, remove the least recently used item from the end of the list
Answered by AI
Add your answer
Q2. LRU Cache implementation based on a real time system. How would the main work which will be called etc etc
Add your answer

It was a coding round where i need to solve 3 DSA Questions in 1.5 hour

Q1. This is Technical round where i was asked to implement the Two Question of Dsa one is bases on greedy and another is dp , another one is leetcode hard (finding maxaimal area of rectangle in matrix of 1 and...read more
Add your answer
Q2. Greedy Q was direct i don't remember clearly. I was selected for the 2nd round
Add your answer

Q1. It was also a technical round but bases on LLD problem statement. I was given a problem statement to design a society security system and the they need psudo code for complete implementation using correct ...read more
Add your answer

Q1. I was not selected for 4th round but heard that there were Q on cs fundamentals.
Add your answer

Q1. It was lld question to design a cab booking system.
Add your answer
Q2. Tell me about yourself
Add your answer

Q1. How was your previous organization
Ans. 
My previous organization was a fast-paced tech startup focused on developing cutting-edge software solutions.
• Highly collaborative work environment

• Emphasis on innovation and creativity

• Agile development methodologies were followed

• Regular team meetings and code reviews

• Opportunities for professional growth and learning
Answered by AI
Add your answer
Q2. Please create timer using react
Ans. 
Create a timer using React
• Use useState hook to store the timer value

• Use useEffect hook to update the timer every second

• Display the timer value in the component's render method
Answered by AI
Add your answer

Q1. Slicing in List of Python
Ans. 
Slicing in Python allows you to extract a subset of elements from a list.
• Slicing is done using square brackets and the start:stop:step notation.

• The start index is inclusive, while the stop index is exclusive.

• You can omit any of the three parameters, defaulting to 0 for start, length of list for stop, and 1 for step.

• Negative indices can be used to slice from the end of the list.

• Example: list = [1, 2, 3, 4, 5], list[1:4]
Answered by AI
Add your answer
Q2. Multithreading questions were asked
Add your answer

Coding test with Java and dsa questions

Q1. Core Java Questions
Add your answer
Q2. Maximum subbarray
Add your answer