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First solution in Clear category for Moore Neighbourhood by yama_k_1101
def count_neighbours(grid, row, col):
up_row = row if row == 0 else row - 1
row_range = 2 if row == 0 else 3
left_col = col if col == 0 else col - 1
col_range = 2 if col == 0 else 3
return sum([sum(r) for r in
[inner_row[left_col:(left_col + col_range)] for inner_row in grid[up_row:(up_row + row_range)]]]) - grid[row][col]
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"
Jan. 2, 2015
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