bintree

bintree.c

@@ -2,7 +2,7 @@
 #include "stack.h"
 #include "bintree.h"
 
-//TODO: binären Suchbaum implementieren
+// TODO: binären Suchbaum implementieren
 /*  * `addToTree`: fügt ein neues Element in den Baum ein (rekursiv),
  * `clearTree`: gibt den gesamten Baum frei (rekursiv),
  * `treeSize`: zählt die Knoten im Baum (rekursiv),
@@ -12,7 +12,57 @@
 // 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 (isDuplicate)
+        *isDuplicate = 0;
 
+    // Wenn kein Knoten angelegt
+    if (root == NULL)
+    {
+        // Neuen Knoten erstellen
+        TreeNode *newNode = malloc(sizeof(TreeNode));
+        if (!newNode)
+            return NULL;
+        // mit Daten füllen
+        newNode->data = malloc(dataSize);
+        if (!(newNode->data))
+        {
+            free(newNode);
+            return NULL;
+        }
+
+        memcpy(newNode->data, data, dataSize);
+        newNode->left = NULL; // Kinder NULL setzen
+        newNode->right = NULL;
+        return newNode;
+    }
+    // auf Doppellungen überprüfen, daten/werte vergelichen
+    // int cmp = compareFct(data, root->data);
+
+    int cmp = compareFct(data, root->data);
+
+    if (cmp == 0) // Duplikat erkannt
+    {
+        if (isDuplicate) // nicht einfügen
+        {
+            *isDuplicate = 1;
+            return root;
+        }
+        else // einfügen erlaubt
+        {
+            root->right = addToTree(root->right, data, dataSize, compareFct, NULL);
+            return root;
+        }
+    }
+    // kein Duplikat
+    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);
+    }
+    return root;
 }
 
 // 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 +70,64 @@ 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; // Stack für Iterator
+    static TreeNode *lastRoot = NULL;
+    TreeNode *currentNode;
 
+    if (root != NULL) // Initialisierung bei erstem Aufruf
+    {
+        lastRoot = root;
+
+        if (stack)
+        {
+            freeStack(stack);
+            stack = NULL;
+        }
+
+        stack = createStack();
+
+        // alle linken Knoten vom Wurzelknoten pushen
+        currentNode = root;
+        while (currentNode)
+        {
+            push(stack, currentNode);
+            currentNode = currentNode->left;
+        }
+    }
+    // Stack ist leer, keine Daten mehr
+    if (!stack || isEmpty(stack))
+        return NULL;
+
+    TreeNode *newNode = pop(stack); // nächster Knoten
+
+    // Wenn rechter Teilbaum vorhanden → alle linken Knoten pushen
+    currentNode = newNode->right;
+    while (currentNode)
+    {
+        push(stack, currentNode);
+        currentNode = currentNode->left;
+    }
+    return newNode->data; // Daten zurückgeben
 }
 
 // Releases all memory resources (including data copies).
 void clearTree(TreeNode *root)
 {
-
+    if (root)
+    {
+        clearTree(root->left);
+        clearTree(root->right);
+        free(root->data);
+        free(root);
+    }
 }
 
 // Returns the number of entries in the tree given by root.
 unsigned int treeSize(const TreeNode *root)
 {
-
+    unsigned int size = 0;
+    if (root == NULL)
+        return 0;
+    size = 1 + treeSize(root->left) + treeSize(root->right);
+    return size;
 }

highscores.txt

@@ -1 +1,2 @@
 player1;3999
+player_name;3993

makefile

@@ -35,8 +35,9 @@ $(program_obj_filesobj_files): %.o: %.c
 # --------------------------
 # Unit Tests
 # --------------------------
-unitTests: numbers.o test_numbers.c $(unityfolder)/unity.c
-	$(CC) $(FLAGS) -I$(unityfolder) -o runtest_numbers test_numbers.c numbers.o $(unityfolder)/unity.c
+unitTests:
+	echo "needs to be implemented"
+
 # --------------------------
 # Clean
 # --------------------------

numbers.c

@@ -14,91 +14,13 @@
 // 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.
-
-//ohne Binärbaum
-/*unsigned int *createNumbers(unsigned int len)
-{
-  if (len <= 2)
-    return NULL;
-  
-  // Zufallszahlen erzeugen
-  srand(time(NULL));
-  unsigned int *numbers = malloc(len * sizeof(unsigned int));
-  //prüfen, ob Speicher richtig reserviert wurde
-  if(numbers == NULL){
-    printf("Es konnte nicht genügend Speicher reserviert werden");
-    free(numbers);
-    return NULL;
-  }
-  //einsetzen der Zahlen ins array
-  for (size_t i = 0; i < len; i++){
-    numbers[i] = (rand()%(2*len))+1;
-    //stellt sicher, dass keine Duplikate vorhanden sind
-    for(size_t j = 0; j < i; j++){
-      if(numbers[i] == numbers[j]){
-        i--;
-        break;
-      }
-    }
-
-  }
-  numbers[rand()% len] = (rand()% (2* len) )+ 1;
-  return numbers;
-  free(numbers);
-}*/
-
-int compare(const void *a, const void *b) {
-    return (*(int*)a - *(int*)b);
-}
-//mit Binärbaum
 unsigned int *createNumbers(unsigned int len)
 {
-  if (len <= 2)
-    return NULL;
 
-  // Zufallszahlen erzeugen
-  srand(time(NULL));
-  unsigned int *numbers = malloc(len * sizeof(unsigned int));
-  //prüfen, ob Speicher richtig reserviert wurde
-  if(numbers == NULL){
-    printf("Es konnte nicht genügend Speicher reserviert werden");
-    free(numbers);
-    return NULL;
-  }
-
-  TreeNode *root = NULL;
-  for(size_t i= 0; i < len; i++){
-    unsigned int isDup = 0; 
-    numbers[i] = (rand()%(2*len))+1;
-    root = addToTree(root, &numbers, sizeof(numbers), compare, &isDup);
-    if(isDup != 1){
-      i--;
-    }
-  }
-
-  numbers[rand()% len] = (rand()% (2* len) + 1);
-  return numbers;
-  clearTree(root);
-  free(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)
 {
-  unsigned int dobble;
-  // neues Array zum reinkopieren initialisieren 
-  unsigned int *nums = malloc(len * sizeof(unsigned int));
-  for(int l = 0; l < len; l++)
-    nums[l] = numbers[l]; 
 
-  //array sortieren
-  qsort(nums, len, sizeof(unsigned int), compare);
-  for(int k = 0; k < len; k++){
-    if(nums[k] == nums[k+1]){
-      dobble = nums[k];
-      break;
-    }
-  }
-  return dobble;
-  free(nums);
 }

stack.h

@@ -8,7 +8,10 @@ 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);
 

test_numbers.c

@@ -1,54 +0,0 @@
-#include <stdlib.h>
-#include <stdio.h>
-#include <time.h>
-#include <string.h>
-#include "numbers.h"
-#include "bintree.h"
-#include "unity.h"
-
-//überprüft, dass die Funktion nicht NULL zurückgibt
-void test_create_Numbers_notNull(void){
-    unsigned int* numbers = createNumbers(10);
-    TEST_ASSERT_NOT_NULL(numbers);
-    free(numbers);
-}
-// überprüft, ob die generierten Zufallszahlen innerhalb des Intervalls sind
-void test_create_Numbers_randoms_inside_Value_range(void){
-    unsigned int len = 10;
-    unsigned int* numbers = createNumbers(len);
-
-    for(size_t i = 0; i < len; i++)
-        TEST_ASSERT_LESS_OR_EQUAL(2 * len + 1, numbers[i]);
-
-    free(numbers);
-}
-
-// überprüft, ob getDuplicate,die richtige doppelte Zahl findet
-void test_get_duplicate_returns_correct_dobble(void){
-    unsigned int numbers [5] = {1,2,3,4,2};
-    unsigned int len = 5;
-    unsigned int expected_result = 2;
-    unsigned int result = getDuplicate(numbers, len);
-    TEST_ASSERT_EQUAL_UINT32(expected_result, result);
-}
-
-
-void setUp(void) {
-    
-}
-
-void tearDown(void) {
-    
-}
-
-
-int main()
-{
-    UNITY_BEGIN();
-    
-    printf("\n============================\nNumbers tests\n============================\n");
-    RUN_TEST(test_get_duplicate_returns_correct_dobble);
-    RUN_TEST(test_create_Numbers_notNull);
-    RUN_TEST(test_create_Numbers_randoms_inside_Value_range);
-    return UNITY_END();
-}