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Leetcode Problem 1254. Number of Closed Islands

1254. Number of Closed Islands

Leetcode Solutions

Depth First Search (DFS) to Find Closed Islands

  1. Initialize a count variable to 0 to keep track of closed islands.
  2. Create a visited 2D array to mark visited cells.
  3. Iterate over each cell in the grid. a. If the cell is a land cell (0) and not visited, perform DFS from this cell. b. If DFS returns true (island is closed), increment the count.
  4. Return the count of closed islands.
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Breadth First Search (BFS) to Find Closed Islands

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