-
Notifications
You must be signed in to change notification settings - Fork 0
/
Universe.php
62 lines (52 loc) · 1.64 KB
/
Universe.php
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
<?php
class Universe
{
/**
* @var array
*/
private $cells;
public function __construct(array $cells)
{
$this->cells = $cells;
}
public function getNumRows(): int
{
return count($this->cells);
}
public function getNumCols(): int
{
return count($this->cells[0]);
}
public function getCells(): array
{
return $this->cells;
}
public function setCells(array $cells)
{
$this->cells = $cells;
}
public function flipCellAt(int $row, int $col)
{
$this->cells[$row][$col] = !$this->cells[$row][$col];
}
public function countNeighbours(int $row, int $col): int
{
$count = 0;
// Previous row
$count += isset($this->cells[$row - 1][$col - 1]) ? $this->cells[$row - 1][$col - 1] : 0;
$count += isset($this->cells[$row - 1][$col]) ? $this->cells[$row - 1][$col] : 0;
$count += isset($this->cells[$row - 1][$col + 1]) ? $this->cells[$row - 1][$col + 1] : 0;
// Same row
$count += isset($this->cells[$row][$col - 1]) ? $this->cells[$row][$col - 1] : 0;
$count += isset($this->cells[$row][$col + 1]) ? $this->cells[$row][$col + 1] : 0;
// Next row
$count += isset($this->cells[$row + 1][$col - 1]) ? $this->cells[$row + 1][$col - 1] : 0;
$count += isset($this->cells[$row + 1][$col]) ? $this->cells[$row + 1][$col] : 0;
$count += isset($this->cells[$row + 1][$col + 1]) ? $this->cells[$row + 1][$col + 1] : 0;
return $count;
}
public function getCellAt(int $row, int $col): int
{
return $this->cells[$row][$col];
}
}