PYTHON PROBLEM 311 · Company Medium

Calculate binary-tree diameter: Diameter crosses root

Find the longest edge-count path between any two nodes.

Choose DFS/BFS → define node state → combine child resultsbinary treepostordercompany screen

PROBLEM OVERVIEW

What this Python exercise asks you to practise

This scenario tests calculate binary-tree diameter. It belongs to the Top Company Trees and Tries roadmap and uses the choose dfs/bfs → define node state → combine child results pattern.

Cover the binary-tree, BST, trie, traversal, serialization, and path questions seen in coding loops.

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INTERVIEW CONTEXT

Skills and reported company tags

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