The algorithm: Initialize island count = For each cell in the grid: - If it's land ('') and unvisited: - Increment island count - Run DFS/BFS to mark all connected land as visited Return island count You can mark cells as visited by changing '1' to '0' or by using a separate visited set.
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$ curl repovive.com/roadmaps/maang-interview-prep/graphs/number-of-islands-solution
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