Leetcode Problem 417. Pacific Atlantic Water Flow
Leetcode Solutions
Approach: Breadth First Search (BFS)
- Check if the input matrix is empty; if so, return an empty list.
- Initialize variables for the number of rows and columns, two queues for BFS, two sets to keep track of visited cells, and a directions array for traversal.
- Add all cells adjacent to the Pacific and Atlantic oceans to their respective queues and visited sets.
- Perform BFS for each ocean, adding cells to the visited sets if they can flow into the ocean.
- After BFS, find the intersection of the two sets to get cells that can flow into both oceans.
Approach: Depth First Search (DFS)
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