andribas404 / largeisland

решение задачи об островах в один проход

largeisland

Problem statement on leetcode.com

In a 2D grid of 0s and 1s, we change at most one 0 to a 1.

After, what is the size of the largest island? (An island is a 4-directionally connected group of 1s).

Example 1:

Input: [[1, 0], [0, 1]]

Output: 3

Explanation: Change one 0 to 1 and connect two 1s, then we get an island with area = 3.

Notes:

• 1 <= grid.length = grid[0].length <= 50.
• 0 <= grid[i][j] <= 1.