← Questions

Flood fill

0
AppleCodingLast asked Jan 2026

Given an image as a grid of colors, a starting pixel and a new color, recolor the starting pixel and every pixel connected to it (up, down, left, right) that has the same original color. Write both a BFS and a DFS version, and handle the case where the new color equals the old one.

Write and test your solution herePython in your browser, the question's tests level by level, every submission kept for you.Sign in to start coding