I recently completed a 6-round interview process, and I wanted to share my experience with the LeetCode community! Each round tested different aspects of my problem-solving, system design, and behavioral skills.
Round 1: Coding Challenge
LeetCode Question: Number of Islands
Discussed edge cases and optimized the solution.
Round 2: Coding Challenge
Problem: Password Generator
Implemented a secure password generator with constraints like length, character types, and randomness.
Round 3: Frontend System Design
Task: Design a 5-star rating React component
Implemented a reusable and accessible rating component with interactive states and animations.
Round 4: Algorithmic Challenge
LeetCode Question:
"Assume that we already have a function that checks if a sentence is valid. Generate all valid sentences with the given set of words."
Used Backtracking + Dynamic Programming to generate valid sentence combinations efficiently.
Round 5: API + Data Processing
Task: Given a public API that provides recent match details, generate:
A simple match report summarizing the results
Player statistics, including performance metrics
Round 6: Behavioral + Graph-Based Coding Question
Behavioral Questions:
How do you deal with a strict manager?
How do you handle strict deadlines and unclear instructions?
LeetCode Question:
"Given a failing job in a dependency graph, list all the jobs that will fail."
Used Topological Sorting / DFS to determine all impacted jobs.
Takeaways:
Having strong DSA skills helped me in multiple rounds.
System design and API handling were crucial for practical problem-solving.
The behavioral round tested communication and problem-solving under ambiguity.