Compute rainwater accumulation on a height grid

Q: How do I practice coding and algorithm questions?

Use PracHub's coding console to write, test, and debug your solutions in Python or JavaScript. View hints, test against sample inputs, and compare with official solutions.

Q: What difficulty level is this coding question?

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

Q: What role is this question designed for?

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

Question

Compute rainwater accumulation on a height grid

PracHub · Accepted Answer

This question evaluates understanding of grid-based graph traversal, flow simulation to local minima, and the ability to reason about state propagation and accumulation across cells.

Quick Overview

Compute rainwater accumulation on a height grid