feat(Week10): Add solutions

1 files changed, 73 insertions, 0 deletions

diff --git a/Week10/Exercise03/Inventory.cpp b/Week10/Exercise03/Inventory.cpp
new file mode 100644
index 0000000..699997e
--- /dev/null
+++ b/Week10/Exercise03/Inventory.cpp
@@ -0,0 +1,73 @@
+#include "Inventory.h"
+
+void Inventory::free() {
+	delete[] products;
+}
+
+void Inventory::copyFrom(const Inventory& other) {
+	productsCount = other.productsCount;
+	productsAlloc = other.productsAlloc;
+
+	products = new Product[productsAlloc];
+	for (unsigned i = 0; i < productsCount; ++i)
+		products[i] = other.products[i];
+}
+
+void Inventory::resize() {
+	productsAlloc = productsAlloc == 0 ? 8 : productsAlloc * 2;
+	Product* productsLarger = new Product[productsAlloc];
+
+	for (unsigned i = 0; i < productsCount; ++i)
+		productsLarger[i] = products[i];
+
+	delete[] products;
+	products = productsLarger;
+}
+
+Inventory::Inventory() : products(), productsCount(), productsAlloc()
+{ }
+
+Inventory::~Inventory() {
+	free();
+}
+
+Inventory::Inventory(const Inventory& other) {
+	copyFrom(other);
+}
+
+Inventory& Inventory::operator=(const Inventory& other) {
+	if (this != &other) {
+		free();
+		copyFrom(other);
+	}
+	return *this;
+}
+
+Inventory::Inventory(Inventory&& other) {
+	products = other.products;
+	productsCount = other.productsCount;
+	productsAlloc = other.productsAlloc;
+
+	other.products = nullptr;
+	other.productsAlloc = other.productsCount = 0;
+}
+
+Inventory& Inventory::operator=(Inventory&& other) {
+	if (this != &other) {
+		free();
+
+		products = other.products;
+		productsCount = other.productsCount;
+		productsAlloc = other.productsAlloc;
+
+		other.products = nullptr;
+		other.productsAlloc = other.productsCount = 0;
+	}
+	return *this;
+}
+
+void Inventory::AddProduct(const Product& product) {
+	if (productsCount >= productsAlloc)
+		resize();
+	products[productsCount++] = product;
+}