Enable Javascript in your browser and then refresh this page, for a much enhanced experience.
Random fact: Cherophobia is the fear of fun. solution in Clear category for Moore Neighbourhood by siebenschlaefer
import itertools
def count_neighbours(grid, row, col):
"""Return the number of non-empty cells in Moore neighborhood."""
return sum(
grid[y][x]
for y, x in itertools.product(
[row - 1, row, row + 1], [col - 1, col, col + 1])
if (y, x) != (row, col)
and 0 <= y < len(grid)
and 0 <= x < len(grid[y]))
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"
Aug. 1, 2015
Comments:
