Solution: Island Perimeter
Explore how to determine the perimeter of a single island in a grid by iterating through each cell and adjusting for shared edges between land cells. Understand the step-by-step approach to reduce perimeter based on adjacency and apply efficient matrix traversal for coding interviews.
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Statement
You are given a grid with dimensions row x col, where each cell represents either land (grid[i][j] = 1) or water (grid[i][j] = 0). The grid satisfies the following conditions:
Cells are connected only horizontally or vertically (not diagonally).
The grid is surrounded by water and contains exactly one island, consisting of one or more connected land cells.
The island has no lakes, meaning no water is enclosed within the island that connects to the surrounding water.
The grid is rectangular, and each cell is a square with a side length 1.
Your task is to calculate the perimeter of the island.
Constraints:
rowgrid.lengthcol...