Alex Hunter

Originally published on LeetCopilot Blog Constraints aren't just numbers—they are hints. Here is how to map 10^5 directly to the correct algorithm before you write a single line of code. Rushing into code without estimating time complexity is a common beg... See more

Originally published on LeetCopilot Blog Can you verify your BFS order on a whiteboard? Most candidates can't. Here is the 'Queue Snapshot' technique to trace level-order traversal without getting lost. Many BFS explanations jump straight to code, leaving... See more

Originally published on LeetCopilot Blog Recursion feels like magic until you trace it. Learn a foolproof manual method to dry-run recursive functions using a stack table and recursion tree. Recursion is often the biggest hurdle for beginners in Data Stru... See more

Originally published on LeetCopilot Blog Your solution passes the first 10 test cases instantly, then times out on test case 47/50. This isn't a bug—it's an algorithmic complexity problem. Learn how to diagnose and fix performance issues before they fail ... See more

Originally published on LeetCopilot Blog Some say the system is broken; others say you're lazy. Here is the brutal truth about the 'Fuck LeetCode' debate (and why both sides are wrong). Let's address the elephant in the room. Every time someone posts "fuc... See more