[w7] Added exercise descriptions and solutions

1 files changed, 87 insertions, 0 deletions

diff --git a/week07/Exercise1.cpp b/week07/Exercise1.cpp
new file mode 100644
index 0000000..ec2a47a
--- /dev/null
+++ b/week07/Exercise1.cpp
@@ -0,0 +1,87 @@
+#include "Exercise1.h"
+#include <cstring>
+
+/* Private */
+
+void Recipe::resize() {
+	allocated *= 2;
+	Ingredient* moreIngredients = new Ingredient[allocated];
+	for (int i = 0; i < lastIndex; i++) {
+		moreIngredients[i] = ingredients[i];
+	}
+	delete[] ingredients;
+	ingredients = moreIngredients;
+}
+
+void Recipe::free() {
+	delete[] ingredients;
+}
+void Recipe::copyFrom(const Recipe& other) {
+	this->lastIndex = other.lastIndex;
+	this->allocated = other.allocated;
+	this->ingredients = new Ingredient[allocated];
+	for (int i = 0; i < lastIndex; i++) {
+		this->ingredients[i] = other.ingredients[i];
+	}
+}
+
+/* Public */
+
+Recipe::Recipe() {
+	ingredients = nullptr;
+	lastIndex = allocated = 0;
+}
+Recipe::~Recipe() {
+	free();
+}
+Recipe::Recipe(const Recipe& other) {
+	copyFrom(other);
+}
+Recipe& Recipe::operator=(const Recipe& other) {
+	if (this != &other) {
+		free();
+		copyFrom(other);
+	}
+	return *this;
+}
+Recipe::Recipe(Recipe&& other) {
+	this->ingredients = other.ingredients;
+	this->lastIndex = other.lastIndex;
+	this->allocated = other.allocated;
+
+	other.ingredients = nullptr;
+}
+Recipe& Recipe::operator=(Recipe&& other) {
+	if (this != &other) {
+		free();
+
+		this->ingredients = other.ingredients;
+		this->lastIndex = other.lastIndex;
+		this->allocated = other.allocated;
+
+		other.ingredients = nullptr;
+	}
+	return *this;
+}
+
+void Recipe::AddIngredient(const Ingredient& newIng) {
+	if (lastIndex == allocated) {
+		resize();
+	}
+	ingredients[lastIndex++] = newIng;
+}
+void Recipe::RemoveIngredient(const char* name) {
+	int index = 0;
+	while (index < lastIndex && strcmp(ingredients[index].name, name) != 0) {
+		index++;
+	}
+	if (index == lastIndex) {
+		return;
+	}
+
+	while (index < lastIndex) {
+		ingredients[index] = ingredients[index+1];
+		index++;
+	}
+	lastIndex--;
+}