Find Perimeter of Island
Find the perimeter of an island.
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Statement
Given a grid representing a map where: :
grid[i][j] = 1represents landgrid[i][j] = 0represents water
Each cell is a square with length = 1 and the grid is rectangular.
Find the perimeter of the island.
Constraints
- The length and width of the grid cannot exceed 100.
- Grid cells are connected only horizontally or vertically.
- There is exactly one island, and the grid is completely surrounded by water.
- The island does not have lakes. The water inside is not connected to the water around the island.
Example
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