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6
1<?php
2/**
3 * Jingga
4 *
5 * PHP Version 8.1
6 *
7 * @package   phpOMS\Algorithm\Sort;
8 * @copyright Dennis Eichhorn
9 * @license   OMS License 2.0
10 * @version   1.0.0
11 * @link      https://jingga.app
12 */
13declare(strict_types=1);
14
15namespace phpOMS\Algorithm\Sort;
16
17/**
18 * SelectionSort class.
19 *
20 * @package phpOMS\Algorithm\Sort;
21 * @license OMS License 2.0
22 * @link    https://jingga.app
23 * @since   1.0.0
24 */
25final class SelectionSort implements SortInterface
26{
27    /**
28     * Constructor
29     *
30     * @since 1.0.0
31     * @codeCoverageIgnore
32     */
33    private function __construct()
34    {
35    }
36
37    /**
38     * {@inheritdoc}
39     */
40    public static function sort(array $list, int $order = SortOrder::ASC) : array
41    {
42        $n = \count($list);
43
44        if ($n < 2) {
45            return $list;
46        }
47
48        for ($i = 0; $i < $n - 1; ++$i) {
49            $min = $i;
50
51            for ($j = $i + 1; $j < $n; ++$j) {
52                if (!$list[$j]->compare($list[$min], $order)) {
53                    $min = $j;
54                }
55            }
56
57            if ($min !== $i) {
58                $old        = $list[$i];
59                $list[$i]   = $list[$min];
60                $list[$min] = $old;
61            }
62        }
63
64        return $list;
65    }
66}