Leetcode 733: Flood Fill
Problem Statement An image is represented by an m x n integer grid image where image[i][j] represents the pixel value of the image. You are also given three integers sr, sc, and color. You should perform a flood fill on the image starting from the pixel image[sr][sc]. To perform a flood fill, consider the starting pixel, plus any pixels connected >4-directionally to the starting pixel of the same color as the starting pixel, >plus any pixels connected 4-directionally to those pixels (also with the same >color), and so on....