- Smallest Rectangle Enclosing Black Pixels
困难
https://leetcode-cn.com/problems/smallest-rectangle-enclosing-black-pixels/
You are given an m x n binary matrix image where 0 represents a white pixel and 1 represents a black pixel.
The black pixels are connected (i.e., there is only one black region). Pixels are connected horizontally and vertically.
Given two integers x and y that represents the location of one of the black pixels, return the area of the smallest (axis-aligned) rectangle that encloses all black pixels.
You must write an algorithm with less than O(mn) runtime complexity
Example 1:
Input: image = [["0","0","1","0"],["0","1","1","0"],["0","1","0","0"]], x = 0, y = 2
Output: 6
Example 2:
Input: image = [["1"]], x = 0, y = 0
Output: 1
Constraints:
m == image.length
n == image[i].length
1 <= m, n <= 100
image[i][j] is either '0' or '1'.
0 <= x < m
0 <= y < n
image[x][y] == '1'.
The black pixels in the image only form one component.
相关企业
- 谷歌 Google|6
相关标签
- Depth-First Search
- Breadth-First Search
- Array
- Binary Search
- Matrix