Meta E4 - How to Represent a Binary Tree in CoderPad and Effectively Trace a DFS Solution?

Round 1

Questions: Specific question not provided.

Follow-up Questions:

• How do interviewers typically provide a binary tree structure in CoderPad?
• Should I assume a specific TreeNode class, or do I define it myself?
• What key variables should I introduce to effectively explain a DFS recursive solution?
• How can I walk through a simple binary tree example step-by-step to show how the recursion and updates work?
• During the interview, how can I trace the solution (e.g., diameter calculation) without executing the code?
• How should I visually represent or explain the recursive calls and updates (like res for the maximum diameter)?