Leetcode Problem 1992. Find All Groups of Farmland

1992. Find All Groups of Farmland

Leetcode Solutions

DFS Traversal to Find Farmland Groups

  1. Initialize an empty list result to store the coordinates of each group's corners.
  2. Iterate over each cell in the matrix.
  3. If the current cell is farmland (value 1) and not visited, initiate DFS from this cell.
  4. In DFS, explore all four directions (up, down, left, right) from the current cell.
  5. Keep track of the minimum and maximum row and column indices visited during DFS.
  6. After DFS completes for a group, add the coordinates [min_row, min_col, max_row, max_col] to result.
  7. Continue the iteration until all cells are processed.
  8. Return the result list.
UML Thumbnail

Iterative Exploration with Boundary Tracking

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