How do I approach Coding & Algorithms interview questions?

Coding & Algorithms questions require understanding of core concepts and practice. PracHub provides solutions with explanations to help you master coding & algorithms interviews.

What difficulty level is this interview question?

This is a medium difficulty Coding & Algorithms question, commonly asked during Technical Screen rounds at Google.

What role is this question designed for?

This question is commonly asked for Software Engineer candidates at Google during technical interviews.

Count Clusters of 2D Points Within a Radius

Last updated: Jul 1, 2026

Quick Overview

This question tests graph traversal skills, specifically identifying connected components among a set of 2D points using distance-based adjacency. It assesses the ability to model a geometric problem as a graph and apply DFS, BFS, or Union-Find, a common evaluation of algorithmic thinking in coding interviews. It also probes awareness of efficiency trade-offs when scaling to large point sets.