halfway part 2

Exam/IKT203Exam/Portfolio/Assignment-02/option1.cpp

@@ -5,10 +5,13 @@
 #include <string>
 #include "option1.h"
 #include "SharedLib.h"
+#include "TLinkedList.h"
+#include "TPerson.h"
+
+TLinkedList g, e;
 
 /**
  * @brief Callback function to process one name.
- */
 static bool NameReadCallback(const int aIndex, const int aTotalCount, const std::string& aFirstName, const std::string& aLastName)
 {
 	std::cout << "Reading Name " << (aIndex + 1) << " of " << aTotalCount << ": "
@@ -18,19 +21,70 @@ static bool NameReadCallback(const int aIndex, const int aTotalCount, const std:
 	// Return false when aIndex is 9 to stop the loop after this one.
 	return (aIndex < 9);
 }
+*/
+
+// *Inspired* by the provided NameReadCallback given above
+static bool onNameRead(const int aIndex, int aTotalCount, const std::string& aFirstName, const std::string& aLastName)
+{
+    const ENumStatus status = (aIndex < 1500) ? EMPLOYEE : GUEST;
+
+    const TPerson p(aFirstName, aLastName, status);
+
+
+    if (status == EMPLOYEE)
+        e.Append(p);
+    else
+        g.Append(p);
+
+    std::cout << "[" <<aIndex << "] " << aLastName << ", " << aFirstName << " | status: " << (status == 1 ? "Employee" : "Guest")
+    << " | cabin size: " << p.cabinSize << std::endl;
+    std::cout << "---------------------------------------------------------------" << std::endl;
+
+    return true;
+}
 
 
 int RunApp()
 {
-	// Path to the names data file
-	std::string filename = "F:\\IKT203\\VisualStudio\\DATA\\random_names.txt";
+	/* Path to the names data file
+    This is MY absolute path -- change to your local path for this to read properly
+    something like "C:\Users\Username\FolderYouSavedTheSubmissionIn\Exam\IKT203Exam\DATA\random_names.txt"
+    Double slash is needed for string to pass the correct file path */
+	const std::string filename = "C:\\Users\\csand\\IKT203\\Exam\\IKT203Exam\\DATA\\random_names.txt";
 
-	std::cout << "Reading first 10 names from file: " << filename << "\n\n";
+	std::cout << "Reading names and grouping them: " << "\n" << std::endl;
 
 	// Call the utility function with the name callback
-	readNamesFromFile(filename, NameReadCallback);
+	readNamesFromFile(filename, onNameRead);
 
-	std::cout << "\nFinished reading names." << std::endl;
+	std::cout << "\nFinished reading names.\n\nSorting." << std::endl;
+
+    // Merge sorting
+    e.Sort();
+    g.Sort();
+
+    // Attempt at "beautifying" the terminal output somewhat
+    std::cout << "\n\n\n---------------------------------------------------------------" << std::endl;
+    std::cout << "Employees merge sorted alphabetically" << std::endl;
+    std::cout << "---------------------------------------------------------------" << std::endl;
+
+
+    for (int i = 0; i < e.GetSize(); i++) {
+        std::cout << "[" << i << "] " << e.GetAtIndex(i).lastName << ", " << e.GetAtIndex(i).firstName
+       << " | status: Employee | cabin size: " << e.GetAtIndex(i).cabinSize << std::endl;
+        std::cout << "---------------------------------------------------------------" << std::endl;
+    }
+
+    std::cout << "\n\n\n---------------------------------------------------------------" << std::endl;
+    std::cout << "Guests merger sorted alphabetically" << std::endl;
+    std::cout << "---------------------------------------------------------------" << std::endl;
+
+
+    for (int i = 0; i < g.GetSize(); i++) {
+        std::cout << "[" << i << "] " << g.GetAtIndex(i).lastName << ", " << g.GetAtIndex(i).firstName
+       << " | status: Guest | cabin size: " << g.GetAtIndex(i).cabinSize << std::endl;
+        std::cout << "---------------------------------------------------------------" << std::endl;
+    }
 
 	return 0;
 }

Exam/IKT203Exam/Portfolio/SharedLib/CMakeLists.txt

@@ -2,7 +2,11 @@
 
 # Define a library target named "SharedLib".
 # We use STATIC because we are using cpp and header files.
-add_library(SharedLib STATIC)
+add_library(SharedLib STATIC
+        TPerson.cpp
+        TPerson.h
+        TLinkedList.cpp
+        TLinkedList.h)
 
 # --- Step 2: Add Header Files to the Library ---
 

Exam/IKT203Exam/Portfolio/SharedLib/FileReaderUtils.cpp

@@ -1,7 +1,5 @@
 #include "FileReaderUtils.h"
 
-#include "FileReaderUtils.h"
-
 int GetRecordCount(const std::string& aHeaderLine)
 {
 	size_t recordPos = aHeaderLine.find("records:=");

Exam/IKT203Exam/Portfolio/SharedLib/TLinkedList.cpp

@@ -0,0 +1,187 @@
+#include "TLinkedList.h"
+#include <iostream>
+
+TLinkedList::~TLinkedList()
+{
+    const Node* cur = head;
+    while (cur) {
+        const Node* next = cur->next;
+        delete cur;
+        cur = next;
+    }
+}
+
+void TLinkedList::Append(const TPerson& person)
+{
+    Node* newNode = new Node(person);
+    if (size == 0) {
+        head = tail = newNode;
+    } else {
+        tail->next = newNode;
+        tail = newNode;
+    }
+    size++;
+}
+
+void TLinkedList::Prepend(const TPerson& person)
+{
+    Node* newNode = new Node(person);
+    if (size == 0) {
+        head = tail = newNode;
+    } else {
+        newNode->next = head;
+        head = newNode;
+    }
+    size++;
+}
+
+void TLinkedList::InsertAtIndex(const int index, const TPerson& person)
+{
+    if (index < 0 || index > size) {
+        std::cout << "Index out of range\n";
+        return;
+    }
+
+    if (index == 0) {
+        Prepend(person);
+        return;
+    }
+    if (index == size) {
+        Append(person);
+        return;
+    }
+
+    Node* prev = head;
+    for (int i = 0; i < index - 1; ++i)
+        prev = prev->next;
+
+    Node* newNode = new Node(person);
+    newNode->next = prev->next;
+    prev->next = newNode;
+    size++;
+}
+
+void TLinkedList::Remove(const int index)
+{
+    if (index < 0 || index >= size)
+        return;
+
+    if (index == 0) {
+        const Node* oldHead = head;
+        head = head->next;
+        if (size == 1)
+            tail = nullptr;
+        delete oldHead;
+        size--;
+        return;
+    }
+
+    Node* prev = head;
+    for (int i = 0; i < index - 1; ++i)
+        prev = prev->next;
+
+    const Node* toDelete = prev->next;
+    prev->next = toDelete->next;
+    if (toDelete == tail)
+        tail = prev;
+    delete toDelete;
+    size--;
+}
+
+TPerson TLinkedList::GetAtIndex(const int index) const
+{
+    if (index < 0 || index >= size) {
+        std::cout << "Index out of range\n";
+        // return dummy
+        return {"N/A", "N/A", GUEST};
+    }
+
+    Node* cur = head;
+    for (int i = 0; i < index; ++i)
+        cur = cur->next;
+
+    return cur->person;
+}
+
+void TLinkedList::MergeSortSplit(Node *source, Node **front, Node **back)
+{
+    if (source == nullptr || source->next == nullptr) {
+        *front = source;
+        *back = nullptr;
+        return;
+    }
+
+    Node* slow = source;
+    const Node* fast = source->next;
+
+    while (fast != nullptr) {
+        fast = fast->next;
+        if (fast != nullptr) {
+            slow = slow->next;
+            fast = fast->next;
+        }
+    }
+
+    *front = source;
+    *back = slow->next;
+    slow->next = nullptr;
+}
+
+TLinkedList::Node *TLinkedList::MergeList(Node *a, Node *b)
+{
+    if (a == nullptr)
+        return b;
+    if (b == nullptr)
+        return a;
+
+    Node* result = nullptr;
+
+    if (a->person < b->person) {
+        result = a;
+        result->next = MergeList(a->next, b);
+    }
+    else {
+        result = b;
+        result->next = MergeList(a, b->next);
+    }
+    return result;
+}
+
+TLinkedList::Node *TLinkedList::MergeSort(Node *head)
+{
+    if (head == nullptr || head->next == nullptr)
+        return head;
+
+    Node* front;
+    Node* back;
+
+    MergeSortSplit(head, &front, &back);
+
+    front = MergeSort(front);
+    back = MergeSort(back);
+    return MergeList(front, back);
+
+
+}
+
+void TLinkedList::Sort()
+{
+    this->head = MergeSort(head);
+
+    Node* cur = this->head;
+    tail = nullptr;
+    while (cur) {
+        if (cur->next == nullptr)
+            tail = cur;
+        cur = cur->next;
+    }
+}
+
+
+
+
+
+
+
+
+

Exam/IKT203Exam/Portfolio/SharedLib/TLinkedList.h

@@ -0,0 +1,56 @@
+#ifndef IKT203_COURSE_ASSIGNMENTS_TLINKEDLIST_H
+#define IKT203_COURSE_ASSIGNMENTS_TLINKEDLIST_H
+
+#include "TPerson.h"
+
+class TLinkedList {
+
+
+    private:
+    struct Node {
+        TPerson person;
+        Node* next;
+        explicit Node(const TPerson& p) : person(p), next(nullptr) {}
+
+        void setNext(Node* n)
+        {
+            this->next = n;
+        }
+
+        [[nodiscard]] static Node* GetNext(const Node* n)
+        {
+            return n->next;
+        }
+
+        [[nodiscard]] static TPerson GetPerson(Node* n)
+        {
+            return n->person;
+        }
+    };
+    Node* head;
+    Node* tail;
+    int size;
+public:
+    TLinkedList() : head(nullptr), tail(nullptr), size(0) {}
+    ~TLinkedList();
+
+    void Append(const TPerson& person);
+    void Prepend(const TPerson& person);
+    void InsertAtIndex(int index, const TPerson& person);
+    void Remove(int index);
+    [[nodiscard]] TPerson GetAtIndex(int index) const;
+    [[nodiscard]] int GetSize() const { return size; }
+    static void MergeSortSplit(Node* source, Node** front, Node** back);
+    static Node* MergeList(Node*, Node*);
+    static Node* MergeSort(Node*);
+    void Sort();
+
+
+
+
+
+
+};
+
+
+#endif //IKT203_COURSE_ASSIGNMENTS_TLINKEDLIST_H

Exam/IKT203Exam/Portfolio/SharedLib/TPerson.cpp

@@ -0,0 +1,14 @@
+#include "TPerson.h"
+
+
+
+
+
+
+
+
+
+
+
+
+

Exam/IKT203Exam/Portfolio/SharedLib/TPerson.h

@@ -0,0 +1,32 @@
+#ifndef IKT203_COURSE_ASSIGNMENTS_TPERSON_H
+#define IKT203_COURSE_ASSIGNMENTS_TPERSON_H
+#include <string>
+
+#include "Utils.h"
+
+enum ENumStatus {
+    GUEST,
+    EMPLOYEE
+};
+
+
+struct TPerson {
+    std::string firstName;
+    std::string lastName;
+    ENumStatus status;
+    int cabinSize = Utils::RandomInt(1, 4);
+
+    TPerson(std::string f, std::string l, ENumStatus s) : firstName(std::move(f)), lastName(std::move(l)), status(s){}
+    ~TPerson() = default;
+
+    bool operator<(const TPerson& other) const
+    {
+        if (lastName < other.lastName) return true;
+        if (lastName > other.lastName) return false;
+        // same last name → compare first name
+        return firstName < other.firstName;
+    }
+};
+
+
+#endif //IKT203_COURSE_ASSIGNMENTS_TPERSON_H

Exam/IKT203Exam/Portfolio/SharedLib/Utils.cpp

@@ -1,5 +1,6 @@
 #include "Utils.h"
 
+#include <ctime>
 #include <iostream>
 #include <limits>
 
@@ -76,3 +77,17 @@ int Utils::RemoveLine(TDoublyLinkedList &document, TStack &undoStack, TStack &re
     }
     return index;
 }
+
+int Utils::RandomInt(const int min, const int max)
+{
+    static bool isSeeded = false;
+    if (!isSeeded) {
+        std::srand(static_cast<unsigned>(std::time(nullptr)));      //<---- not the "best" random seeding available
+        isSeeded = true;                                            // but sufficient for this use case
+    }
+
+    if (max <= min)
+        return 0;
+
+    return min + rand() % (max - min + 1);                                      // <---- Limited randomness, but again
+}                                                                   // sufficient for this use case

Exam/IKT203Exam/Portfolio/SharedLib/Utils.h

@@ -10,6 +10,7 @@ class Utils {
     static int Insert(TDoublyLinkedList &document, TStack &undoStack, TStack &redoStack, int index);
     static void PrintList(const TDoublyLinkedList &document);
     static int RemoveLine(TDoublyLinkedList &document, TStack &undoStack, TStack &redoStack, int index);
+    static int RandomInt(int, int);