How to Solve Minimum Number of Days to Disconnect Island Problem
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Minimum Number of Days to Disconnect Island
You are given an m x n binary grid grid where 1 represents land and 0 represents water. An island is a maximal 4-directionally (horizontal or vertical) connected group of 1's. The grid is said to be c...
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Understanding the Minimum Number of Days to Disconnect Island Problem
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Problem Statement
You are given an m x n binary grid grid where 1 represents land and 0 represents water. An island is a maximal 4-directionally (horizontal or vertical) connected group of 1's. The grid is said to be connected if we have exactly one island, otherwise is said disconnected. In one day, we are allowed to change any single land cell (1) into a water cell (0). Return the minimum number of days to disconnect the grid.
Minimum Number of Days to Disconnect Island
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Examples
grid = [[0,1,1,0],[0,1,1,0],[0,0,0,0]]2We need at least 2 days to get a disconnected grid. Change land grid[1][1] and grid[0][2] to water and get 2 disconnected island.
grid = [[1,1]]2Grid of full water is also disconnected ([[1,1]] -> [[0,0]]), 0 islands.
Constraints
m == grid.lengthn == grid[i].length1 <= m, n <= 30grid[i][j] is either 0 or 1.How Interview Coder Helps with Leetcode Problems
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