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1 | <?php |
2 | /** |
3 | * Jingga |
4 | * |
5 | * PHP Version 8.1 |
6 | * |
7 | * @package phpOMS\Algorithm\Knapsack |
8 | * @copyright Dennis Eichhorn |
9 | * @license OMS License 2.0 |
10 | * @version 1.0.0 |
11 | * @link https://jingga.app |
12 | */ |
13 | declare(strict_types=1); |
14 | |
15 | namespace phpOMS\Algorithm\Knapsack; |
16 | |
17 | /** |
18 | * Backpack interface. |
19 | * |
20 | * @package phpOMS\Algorithm\Knapsack; |
21 | * @license OMS License 2.0 |
22 | * @link https://jingga.app |
23 | * @since 1.0.0 |
24 | */ |
25 | interface BackpackInterface |
26 | { |
27 | /** |
28 | * Get the value of the stored items |
29 | * |
30 | * @return float |
31 | * |
32 | * @since 1.0.0 |
33 | */ |
34 | public function getValue() : float; |
35 | |
36 | /** |
37 | * Get the cost of the stored items |
38 | * |
39 | * @return float |
40 | * |
41 | * @since 1.0.0 |
42 | */ |
43 | public function getCost() : float; |
44 | |
45 | /** |
46 | * Get the max allowed costs for the items |
47 | * |
48 | * @return float |
49 | * |
50 | * @since 1.0.0 |
51 | */ |
52 | public function getMaxCost() : float; |
53 | |
54 | /** |
55 | * Get items |
56 | * |
57 | * @return array |
58 | * |
59 | * @since 1.0.0 |
60 | */ |
61 | public function getItems() : array; |
62 | |
63 | /** |
64 | * Add item to backpack |
65 | * |
66 | * @param ItemInterface $item Item |
67 | * @param int|float $quantity Quantity of the item |
68 | * |
69 | * @return void |
70 | * |
71 | * @since 1.0.0 |
72 | */ |
73 | public function addItem(ItemInterface $item, int | float $quantity = 1) : void; |
74 | } |