Class Solution
java.lang.Object
g0801_0900.s0827_making_a_large_island.Solution
public class Solution
extends java.lang.Object
827 - Making A Large Island.
Hard
You are given an n x n
binary matrix grid
. You are allowed to change at most one 0
to be 1
.
Return the size of the largest island in grid
after applying this operation.
An island is a 4-directionally connected group of 1
s.
Example 1:
Input: grid = [[1,0],[0,1]]
Output: 3
Explanation: Change one 0 to 1 and connect two 1s, then we get an island with area = 3.
Example 2:
Input: grid = [[1,1],[1,0]]
Output: 4
Explanation: Change the 0 to 1 and make the island bigger, only one island with area = 4.
Example 3:
Input: grid = [[1,1],[1,1]]
Output: 4
Explanation: Can’t change any 0 to 1, only one island with area = 4.
Constraints:
n == grid.length
n == grid[i].length
1 <= n <= 500
grid[i][j]
is either0
or1
.
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Constructor Summary
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Method Summary
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Constructor Details
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Solution
public Solution()
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Method Details
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largestIsland
public int largestIsland(int[][] grid)
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