Real Interview Walkthroughs
Introduction
It is one thing to read about an algorithm; it is another to see how a real interview unfolds from start to finish.
This section provides complete, annotated transcripts of simulated FAANG interviews. They demonstrate exactly what the candidate says, how the interviewer responds, and how the code is incrementally built.
How to use this section
Do not just read the code solutions. Read the dialogue. Pay close attention to: - How the candidate asks clarifying questions. - How the candidate proposes the Brute Force solution. - How the candidate reacts to the interviewer's hints. - How the candidate dry runs the code at the end.
The Walkthroughs
These walkthroughs cover the most common LeetCode patterns, scaling from Easy to Hard.
- Arrays & Hashing: Two Sum Walkthrough
- Stacks: Valid Parentheses Walkthrough
- Intervals: Merge Intervals Walkthrough
- Graphs: Number of Islands Walkthrough
- Design: LRU Cache Walkthrough
- Tries/DFS: Word Search Walkthrough
- Two Pointers: Trapping Rain Water Walkthrough
- Topological Sort: Alien Dictionary Walkthrough
- Heaps: Median from Data Stream Walkthrough