[LeetCode] Flood Fill 洪水填充
Posted Grandyang
tags:
篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了[LeetCode] Flood Fill 洪水填充相关的知识,希望对你有一定的参考价值。
An image
is represented by a 2-D array of integers, each integer representing the pixel value of the image (from 0 to 65535).
Given a coordinate (sr, sc)
representing the starting pixel (row and column) of the flood fill, and a pixel value newColor
, "flood fill" the image.
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 as the starting pixel), and so on. Replace the color of all of the aforementioned pixels with the newColor.
At the end, return the modified image.
Example 1:
Input: image = [[1,1,1],[1,1,0],[1,0,1]] sr = 1, sc = 1, newColor = 2 Output: [[2,2,2],[2,2,0],[2,0,1]] Explanation: From the center of the image (with position (sr, sc) = (1, 1)), all pixels connected by a path of the same color as the starting pixel are colored with the new color. Note the bottom corner is not colored 2, because it is not 4-directionally connected to the starting pixel.
Note:
- The length of
image
andimage[0]
will be in the range[1, 50]
. - The given starting pixel will satisfy
0 <= sr < image.length
and0 <= sc < image[0].length
. - The value of each color in
image[i][j]
andnewColor
will be an integer in[0, 65535]
.
s
以上是关于[LeetCode] Flood Fill 洪水填充的主要内容,如果未能解决你的问题,请参考以下文章
洛谷 P1506 拯救oibh总部DFS/Flood Fill