Alle geschriebenen Tests bestanden

binTreeTest.c

@@ -0,0 +1,144 @@
+#include "unity.h"
+#include <stdlib.h>
+#include "bintree.h"
+
+static int compare(const void *a, const void *b)
+  {
+      return (*(int *)a > *(int *)b) - (*(int *)a < *(int *)b); // a und b werden in int konvertiert und deren Werte miteinander verglichen
+                                                                // returns 1 for a>b or -1 for a<b
+                                                                // in bintree.c wird ueberprueft, ob compare eine positive oder eine negative Zahl zurueckgibt,
+                                                                // wenn a groeßer b, positiv und dann wird links nach Teilbauemen gesucht
+  }
+
+void setUp() {}
+void tearDown() {}
+
+//Adds a single element to the tree
+void test_add_single_element_to_Tree()
+  {
+    TreeNode *root = NULL;
+    int value = 5;
+    int duplicate = -1;
+
+    root = addToTree(root, &value, sizeof(int), compare, &duplicate);
+
+    TEST_ASSERT_NOT_NULL(root);                   //uberprueft, ob root dem Tree hinzugefuegt werden konnte
+    TEST_ASSERT_EQUAL_INT(5, *(int*)root->data); //ueberprueft, ob der Wert fuer data richtig uebernommen wurde
+    TEST_ASSERT_EQUAL_INT(0, duplicate);                //ueberprueft, ob isDuplicate 0 gesetzt wurde (neue Knoten -> isDuplicate sollte 0 sein)
+
+    clearTree(root);
+  }
+
+//Adds multiplie elements to a tree
+void test_add_multiple_elements_to_Tree()
+  {
+    TreeNode *root = NULL;
+    int value[] = {2, 5, 7, 9};
+    int duplicate = -1;
+
+    for(int j = 0; j < 4; ++j)
+      {
+      root = addToTree(root, &value[j], sizeof(int), compare, &duplicate);
+      }
+
+    TEST_ASSERT_EQUAL_INT(4, treeSize(root));
+
+    clearTree(root);
+  }
+
+//Detects the size of a tree
+void test_detect_empty_size()
+  {
+  TEST_ASSERT_EQUAL_INT(0, treeSize(NULL));
+  }
+
+//checks, wether size of tree is correctly determined and wether clearTree() works
+// Test: Duplikate nicht erlaubt (isDuplicate != NULL)
+void test_detect_size() {
+  TreeNode *root = NULL;
+  int values[] = {1, 3, 1, 4, 5, 6, 7, 5, 9, 10};
+  int duplicate = 0; // wird pro Einfügen gesetzt
+
+  for (int j = 0; j < 10; ++j) {
+    root = addToTree(root, &values[j], sizeof(int), compare, &duplicate);
+    if (duplicate) {
+      // Optional: prüfen, dass ein Duplikat erkannt wurde
+      TEST_ASSERT_TRUE(duplicate == 1);
+    }
+    duplicate = 0; // zurücksetzen für nächstes Einfügen
+  }
+
+  // Prüfen der Baumgröße ohne Duplikate
+  TEST_ASSERT_EQUAL_INT(8, treeSize(root));
+
+  clearTree(root);
+}
+
+
+// Test: Duplikate erlaubt (isDuplicate == NULL)
+void test_add_multiplie_elements_one_dup() {
+  TreeNode *root = NULL;
+  int values[] = {1, 3, 1, 4, 5, 6, 7, 5, 9, 10};
+
+  for (int j = 0; j < 10; ++j) {
+    root = addToTree(root, &values[j], sizeof(int), compare, NULL);
+  }
+
+  // Alle Werte inklusive Duplikate
+  TEST_ASSERT_EQUAL_INT(10, treeSize(root));
+
+  clearTree(root);
+}
+
+
+//Traverses the tree inorder to check wether nextTreeData works
+// Hilfsfunktion: rekursive Inorder-Prüfung
+void inorderCheck(TreeNode *node, int expected[], int *idx) {
+  if (node == NULL) return;
+
+  // Linken Teilbaum prüfen
+  inorderCheck(node->left, expected, idx);
+
+  // Aktuelles Element prüfen
+  TEST_ASSERT_EQUAL_INT(expected[*idx], *(int*)node->data);
+  (*idx)++;
+
+  // Rechten Teilbaum prüfen
+  inorderCheck(node->right, expected, idx);
+}
+
+void test_inorder() {
+  TreeNode *root = NULL;
+  int values[] = {5, 3, 7, 2, 4, 6, 8};
+
+  // Baum füllen
+  for (int i = 0; i < 7; i++) {
+    root = addToTree(root, &values[i], sizeof(int), compare, NULL);
+  }
+
+  // Erwartete Inorder-Reihenfolge
+  int expected[] = {2,3,4,5,6,7,8};
+
+  int idx = 0;
+  inorderCheck(root, expected, &idx);
+
+  // Alle Einträge geprüft?
+  TEST_ASSERT_EQUAL_INT(7, idx);
+
+  clearTree(root);
+}
+
+
+int main()
+  {
+    UNITY_BEGIN();
+
+    RUN_TEST(test_add_single_element_to_Tree);
+    RUN_TEST(test_add_multiple_elements_to_Tree);
+    RUN_TEST(test_add_multiplie_elements_one_dup);
+    RUN_TEST(test_detect_empty_size);
+    RUN_TEST(test_detect_size);
+    RUN_TEST(test_inorder);
+
+    return UNITY_END();
+  }

bintree.c

@@ -12,7 +12,53 @@
 // if isDuplicate is NULL, otherwise ignores duplicates and sets isDuplicate to 1 (or to 0 if a new entry is added).
 TreeNode *addToTree(TreeNode *root, const void *data, size_t dataSize, CompareFctType compareFct, int *isDuplicate)
 {
+    if(data!= NULL && dataSize > 0)
+      {
+        if(root == NULL)      //Abbruchbedingung: Keine Wurzel vorhanden, deshalb fügen wir hier einen neuen Knote ein
+          {
+          TreeNode *newNode = (TreeNode *)malloc(sizeof(TreeNode));
+          if(newNode == NULL)
+            {
+            return NULL;
+            }
+          newNode->data = malloc(dataSize);
+          if(newNode->data == NULL)
+            {
+            free(newNode);
+            return NULL;
+            }
+          memcpy(newNode->data, data, dataSize);
+          newNode->left = NULL;
+          newNode->right = NULL;
 
+          if(isDuplicate!= NULL)    //wenn Zeiger isDUplicate auf einen Wert zeigt, wird isDuplicate auf 0 gesetzt
+            {
+              *isDuplicate = 0;
+            }
+
+          return newNode;
+          }
+        int cmp = compareFct(root->data, data);
+        if(cmp > 0)
+          {
+          root->left = addToTree(root->left, data, dataSize, compareFct, isDuplicate);
+          }
+        else if(cmp < 0){
+          root->right = addToTree(root->right, data, dataSize, compareFct, isDuplicate);
+        }
+        else
+          {
+            if (isDuplicate) {
+              *isDuplicate = 1;
+            }
+            else {
+              // isDuplicate == NULL → trotzdem ein Duplikat einfügen (z.B. rechts)
+              root->right = addToTree(root->right, data, dataSize, compareFct, NULL);
+            }
+          }
+          return root;
+      }
+    return NULL;
 }
 
 // Iterates over the tree given by root. Follows the usage of strtok. If tree is NULL, the next entry of the last tree given is returned in ordering direction.
@@ -20,17 +66,68 @@ TreeNode *addToTree(TreeNode *root, const void *data, size_t dataSize, CompareFc
 // push the top node and push all its left nodes.
 void *nextTreeData(TreeNode *root)
 {
+  static StackNode *stack = NULL;
 
+  // 1) Falls neuer Baum übergeben wurde → Initialisieren
+  if (root != NULL)
+  {
+    // alten Stack leeren
+    while (stack != NULL)
+      stack = pop(stack);
+
+    // alle linken Knoten pushen
+    while (root != NULL) {
+      stack = push(stack, root);
+      root = root->left;
+    }
+  }
+
+  // 2) Wenn Stack leer → fertig
+  if (stack == NULL)
+    return NULL;
+
+  // 3) Top-Knoten holen
+  TreeNode *node = (TreeNode *)top(stack);
+  stack = pop(stack);
+
+  // 4) Wenn rechter Teilbaum existiert → alle linken Knoten pushen
+  TreeNode *right = node->right;
+  while (right != NULL) {
+    stack = push(stack, right);
+    right = right->left;
+  }
+
+  // 5) Daten zurückgeben
+  return node->data;
 }
 
+
 // Releases all memory resources (including data copies).
 void clearTree(TreeNode *root)
 {
+    if (root == NULL)
+      {
+        return;
+      }
+    // Erst linken Knoten löschen
+    clearTree(root->left);
 
+    // Dann rechten Knoten löschen
+    clearTree(root->right);
+
+    // Dann eigenen Speicher freigeben
+    free(root->data);
+    free(root);
 }
 
+
 // Returns the number of entries in the tree given by root.
 unsigned int treeSize(const TreeNode *root)
 {
+  if(root == NULL)
+    {
+    return 0;
+    }
+  return 1 + treeSize(root->left) + treeSize(root->right); //1, weil eine Wurzel gefunden wurde und dann immer plus eins fuer einen Teilbaum
 
 }

highscores.txt

@@ -1 +1,3 @@
+Silvana;9944
+hannes;9910
 player1;3999

makefile

@@ -35,8 +35,25 @@ $(program_obj_filesobj_files): %.o: %.c
 # --------------------------
 # Unit Tests
 # --------------------------
-unitTests:
-	echo "needs to be implemented"
+unity_src = $(unityfolder)/unity.c
+
+unitTests: numbersTest stackTest bintreeTest
+	# ./runNumbersTest
+	# ./runStackTest
+	./runBintreeTest
+
+numbersTest: numbers.o bintree.o stack.o numbersTest.c $(unity_src)
+	$(CC) $(CFLAGS) $(LDFLAGS) -I$(unityfolder) $^ -o runNumbersTest
+
+stackTest: stack.o stackTest.c $(unity_src)
+	$(CC) $(CFLAGS) $(LDFLAGS) -I$(unityfolder) $^ -o runStackTests
+
+binTreeTest: bintree.o binTreeTest.c $(unity_src) stack.o
+	$(CC) $(CFLAGS) $(LDFLAGS) -I$(unityfolder) $^ -o runBinTreeTest
+
+%.o: %.c
+	$(CC) -c $(CFLAGS) $< -o $@
+
 
 # --------------------------
 # Clean

numbers.c

@@ -14,13 +14,87 @@
 // Returns len random numbers between 1 and 2x len in random order which are all different, except for two entries.
 // Returns NULL on errors. Use your implementation of the binary search tree to check for possible duplicates while
 // creating random numbers.
+// Returns len random numbers between 1 and 2*len in random order,
+// all different, except for exactly one duplicate (two entries the same).
+// Uses your binary search tree implementation to check for duplicates while generating numbers.
 unsigned int *createNumbers(unsigned int len)
 {
+  if (len < 2)
+    return NULL;
 
+  srand(time(NULL));
+
+
+  unsigned int *numbers = malloc(len * sizeof(unsigned int));
+  if (!numbers)
+    return NULL;
+
+  TreeNode *root = NULL; // Baum anfänglich leer
+  unsigned int count = 0;
+
+  // Zufallszahlen generieren, bis das Array voll ist
+  while (count < len) {
+    unsigned int random = (rand() % (2 * len)) + 1;
+
+    int duplicate = 0; // Anfangswert für Duplikat-Check
+    root = addToTree(root, &random, sizeof(random), compareFct, &duplicate);
+
+    if (root == NULL) {
+      free(numbers);
+      return NULL;
+    }
+
+    if (!duplicate) { // Zahl war neu → ins Array einfügen
+      numbers[count++] = random;
+    }
+    // duplicate == 1 → Zahl existiert schon, neue Zahl generieren
+  }
+
+  // Jetzt len eindeutige Zahlen erzeugt → ein Duplikat erzwingen
+  unsigned int idx1 = rand() % len;
+  unsigned int idx2 = rand() % len;
+  while (idx2 == idx1)                // sicherstellen, dass es eine andere Position ist
+    idx2 = rand() % len;
+
+  numbers[idx2] = numbers[idx1];
+
+  // Baum wieder freigeben
+  clearTree(root);
+
+  return numbers;
 }
 
+  // Jetzt len eindeutige Zahlen erzeugt ⇒ wir müssen ein Duplikat erzwingen
+  unsigned int idx1 = rand() % len;
+  unsigned int idx2 = rand() % len;
+  while (idx2 == idx1)
+    idx2 = rand() % len;
+
+  numbers[idx2] = numbers[idx1];   // zweites Exemplar
+
+  clearTree(root);
+  return numbers;
+}
+
+
 // Returns only the only number in numbers which is present twice. Returns zero on errors.
 unsigned int getDuplicate(const unsigned int numbers[], unsigned int len)
 {
-
+  if(len>0)
+    {
+    unsigned int duplicate = 0;
+    for(unsigned int i=0;i<len;i++)
+      {
+        unsigned int v1 = numbers[i];
+        for(unsigned int j=i+1;j<len;j++)
+          {
+          unsigned int v2 = numbers[j];
+          if(v1==v2)
+            {
+            return v1;
+            }
+          }
+      }
+    }
+  return 0;
 }

stack.c

@@ -10,24 +10,49 @@
 // Pushes data as pointer onto the stack.
 StackNode *push(StackNode *stack, void *data)
 {
-
+    if(stack && data){
+      StackNode *t = (StackNode *)malloc(sizeof(StackNode));
+      if(!t)
+        {
+        return NULL; //Speicherfehler
+        }
+      t->next = stack;
+      t->data = data;
+      return t; //Gibt den ersten StackNode des Stacks zurueck
+      }
+    return NULL;
 }
 
 // Deletes the top element of the stack (latest added element) and releases its memory. (Pointer to data has to be
 // freed by caller.)
 StackNode *pop(StackNode *stack)
 {
-
+    if(stack)
+      {
+          StackNode *t = stack->next; //Naechstes Element im Stack wird erstes Element
+          free(stack);
+          return t;
+      }
 }
 
 // Returns the data of the top element.
 void *top(StackNode *stack)
 {
-
+    if(stack)
+      {
+      return stack->data;
+      }
+    return NULL;
 }
 
 // Clears stack and releases all memory.
 void clearStack(StackNode *stack)
 {
-
+  while(stack)
+  {
+      StackNode *tmp = stack;
+      stack = stack->next;
+      free(tmp->data);
+      free(tmp);
+  }
 }

stack.h

@@ -8,6 +8,11 @@ The latest element is taken from the stack. */
 #include <stdlib.h>
 
 //TODO: passenden Datentyp als struct anlegen
+typedef struct Node{
+  void* data;
+  struct Node *next;
+  }StackNode;
+
 
 // Pushes data as pointer onto the stack.
 StackNode *push(StackNode *stack, void *data);