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First solution in Clear category for Moore Neighbourhood by Degusto
def count_neighbours(grid, row, col):
count = 0
count += has_neighbour_at(grid, row - 1, col - 1)
count += has_neighbour_at(grid, row - 1, col)
count += has_neighbour_at(grid, row - 1, col + 1)
count += has_neighbour_at(grid, row, col - 1)
count += has_neighbour_at(grid, row, col + 1)
count += has_neighbour_at(grid, row + 1, col - 1)
count += has_neighbour_at(grid, row + 1, col)
count += has_neighbour_at(grid, row + 1, col + 1)
return count
def has_neighbour_at(grid, row, col):
try:
if row < 0 or col < 0:
return 0
return grid[row][col]
except:
return 0;
if __name__ == '__main__':
#These "asserts" using only for self-checking and not necessary for auto-testing
assert count_neighbours(((1, 0, 0, 1, 0),
(0, 1, 0, 0, 0),
(0, 0, 1, 0, 1),
(1, 0, 0, 0, 0),
(0, 0, 1, 0, 0),), 1, 2) == 3, "1st example"
assert count_neighbours(((1, 0, 0, 1, 0),
(0, 1, 0, 0, 0),
(0, 0, 1, 0, 1),
(1, 0, 0, 0, 0),
(0, 0, 1, 0, 0),), 0, 0) == 1, "2nd example"
assert count_neighbours(((1, 1, 1),
(1, 1, 1),
(1, 1, 1),), 0, 2) == 3, "Dense corner"
assert count_neighbours(((0, 0, 0),
(0, 1, 0),
(0, 0, 0),), 1, 1) == 0, "Single"
Nov. 17, 2015
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