Add diameter of trees algorithm

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13,462 stars (13,462 stars)

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Description

Contributor guide

Research direction

Implement the diameter of a tree algorithm using two DFS traversals or dynamic programming. Write a function that takes a tree (adjacency list) and returns the diameter (longest path length between any two nodes). Include test cases.

Tech stack

cpp

Domain

None

Issue type

Feature

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

3

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

1-3 hours

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

Active

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

Mostly clear

Prerequisites

C++TreesDFS

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

60