PYTHON PROBLEM 290 · Interview-Level

Calculate binary-tree diameter: Skewed tree

The diameter of a one-sided chain is its number of edges.

binary tree · postorder · company screenbinary treepostordercompany screen

PROBLEM OVERVIEW

What this Python exercise asks you to practise

This scenario tests calculate binary-tree diameter. It belongs to the Trees and Tries roadmap and uses the binary tree · postorder · company screen pattern.

Traversal, recursion on hierarchies, binary-search-tree rules, prefix lookup, and subtree reasoning.

COMPLETE WORKSPACE

Learn the plan, trace the logic and run the solution

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SKILL TO CARRY FORWARD

Pattern relevance

This exercise strengthens binary tree · postorder · company screen. Be ready to explain the input, the rule, the boundary cases, and why the chosen approach is appropriate.