76 lines
1.7 KiB
Python
76 lines
1.7 KiB
Python
"""
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name: Nicholas Tamassia
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Honor Code and Acknowledgments:
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This work complies with the JMU Honor Code.
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Comments here on your code and submission.
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"""
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import numpy as np
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type LandGrid = np.ndarray[tuple[int, int], np.dtype[np.bool]]
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def explore_island(grid: LandGrid, start: tuple[int, int]) -> int:
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num_rows, num_cols = grid.shape
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size: int = 0
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def recurse(coord: tuple[int, int]):
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x, y = coord
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if not grid[y, x]:
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return
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nonlocal size
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size += 1
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grid[y, x] = False
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neighbors: list[tuple[int, int]] = []
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if y > 0:
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neighbors.append((x, y - 1))
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if y < num_rows - 1:
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neighbors.append((x, y + 1))
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if x > 0:
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neighbors.append((x - 1, y))
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if x < num_cols - 1:
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neighbors.append((x + 1, y))
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for neighbor in neighbors:
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recurse(neighbor)
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recurse(start)
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return size
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# All modules for CS 412 must include a main method that allows it
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# to imported and invoked from other python scripts
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def main():
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n: int = int(input())
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raw_matrix: list[list[int]] = [list(map(int, input().split())) for _ in range(0, n)]
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land_grid: LandGrid = np.array(raw_matrix, dtype=bool)
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num_rows, num_cols = land_grid.shape
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largest_island: int = -1
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for y in range(0, num_rows):
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for x in range(0, num_cols):
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if not land_grid[y, x]:
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continue
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island_size: int = explore_island(land_grid, (x, y))
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if island_size > largest_island:
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largest_island = island_size
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print(largest_island)
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if __name__ == "__main__":
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main()
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