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
63
64
65
66
67
|
<?php
declare(strict_types=1);
class Grid implements Stringable
{
/**
* @param string[][] $data
*/
public function __construct(public array $data) {}
public function __toString(): string
{
$rowToLine = fn(array $row): string => array_reduce(
array: $row,
callback: fn(string $acc, string $character): string => $acc . $character,
initial: "",
);
return array_reduce(
array: $this->data,
callback: fn(string $acc, array $row): string => $acc . $rowToLine($row) . PHP_EOL,
initial: "",
);
}
public function getCharacterAtPosition(Position $position): string
{
if ($this->isInBounds($position)) {
return $this->data[$position->y][$position->x];
}
return ".";
}
/**
* @param Position[] $positions
*/
public function getStringFromPositions(array $positions): string
{
$characters = array_map(
callback: fn(Position $position): string => $this->getCharacterAtPosition($position),
array: $positions,
);
$string = array_reduce(
array: $characters,
callback: fn(string $acc, string $character): string => $acc . $character,
initial: "",
);
return $string;
}
public function isInBounds(Position $position): bool
{
if (!array_key_exists($position->y, $this->data)) {
return false;
}
if (!array_key_exists($position->x, $this->data[$position->y])) {
return false;
}
return true;
}
}
|
