add getSubsetItems method

src/SubsetFinder.php

@@ -209,4 +209,15 @@ protected function calculateRemainingQuantity(array $item, array $setItems): arr
 
         return $item;
     }
+
+    /**
+     * Return a subset of the collection based on the given integer.
+     *
+     * @param int $int
+     * @return Collection
+     */
+    public function getSubsetItems(int $int)
+    {
+        return $this->getFlatCollection()->take($int);
+    }
 }

tests/SubsetFinderTest.php

@@ -176,6 +176,39 @@
         ]);
 });
 
+it('can get n many items as ordered', function () {
+    $collection = collect([
+        ["id" => 1, "quantity" => 11, "price" => 15],
+        ["id" => 2, "quantity" => 6, "price" => 5],
+        ["id" => 3, "quantity" => 18, "price" => 10],
+        ["id" => 5, "quantity" => 4, "price" => 2],
+        ["id" => 12, "quantity" => 5, "price" => 6],
+    ]);
+
+    $setCollection = new SubsetCollection([
+        Subset::of([1, 2, 3, 5, 12])->take(5),
+    ]);
+
+    $subsetter = new SubsetFinder($collection, $setCollection);
+    $subsetter->sortBy('price');
+
+
+    // somemethod will return the first 11 items that is ordered
+    expect($subsetter->getSubsetItems(11)->toArray())->toBe([
+        ["id" => 5, "quantity" => 4, "price" => 2],
+        ["id" => 5, "quantity" => 4, "price" => 2],
+        ["id" => 5, "quantity" => 4, "price" => 2],
+        ["id" => 5, "quantity" => 4, "price" => 2],
+        ["id" => 2, "quantity" => 6, "price" => 5],
+        ["id" => 2, "quantity" => 6, "price" => 5],
+        ["id" => 2, "quantity" => 6, "price" => 5],
+        ["id" => 2, "quantity" => 6, "price" => 5],
+        ["id" => 2, "quantity" => 6, "price" => 5],
+        ["id" => 2, "quantity" => 6, "price" => 5],
+        ["id" => 12, "quantity" => 5, "price" => 6],
+    ]);
+});
+
 
 it('can get the subsets with large number of sets', function() {
     $collection = collect([