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First solution in Clear category for Moore Neighbourhood by ugos
def count_neighbours(grid, row, col):
nrow = len(grid)
ncol = len(grid[0])
outp = 0
for i in range(row - 1, row + 2):
for j in range(col - 1, col + 2):
if ((0 <= i < nrow) and
(0 <= j < ncol) and
not ((i == row) and (j == col))):
outp = outp + grid[i][j]
return outp
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"
July 11, 2015
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