aufräumen

.gitignore

@@ -2,3 +2,7 @@ doble_initial.exe
 highscores.txt
 runStackTest.exe
 stack.o
+runNumbersTest.exe
+numbers.o
+.vscode/launch.json
+.vscode/settings.json

bintree.c

@@ -13,6 +13,7 @@
 TreeNode *addToTree(TreeNode *root, const void *data, size_t dataSize, CompareFctType compareFct, int *isDuplicate)
 {
     
+
 }
 
 // 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.
@@ -26,11 +27,36 @@ void *nextTreeData(TreeNode *root)
 // Releases all memory resources (including data copies).
 void clearTree(TreeNode *root)
 {
+    if (root == NULL)
+    {
+        return;
+    }
     
+    if (root->left != NULL)
+    {
+        clearTree(root->left);
+        free(root->left);
+    }
+    else if (root->right != NULL)
+    {
+        clearTree(root->right);
+        free(root->right);
+    }
+    root->data = NULL;
 }
 
 // Returns the number of entries in the tree given by root.
 unsigned int treeSize(const TreeNode *root)
 {
+    int counterL, counterR = 0;
+    if (root->left != NULL)
+    {
+        counterL = treeSize(root->left) + 1;
+    }
+    else if (root->right != NULL)
+    {
+        counterR = treeSize(root->right) + 1;
+    }
 
+    return counterL + counterR;
 }

makefile

@@ -38,6 +38,12 @@ $(program_obj_filesobj_files): %.o: %.c
 unitTests: stack.o test_stack.c $(unityfolder)/unity.c
 	$(CC) $(FLAGS) -I$(unityfolder) -o runStackTest test_stack.c stack.o $(unityfolder)/unity.c
 
+# --------------------------
+# numbers.c Tests
+# --------------------------
+numbersTests: numbers.o test_numbers.c $(unityfolder)/unity.c
+	$(CC) $(FLAGS) -I$(unityfolder) -o runNumbersTest test_numbers.c numbers.o $(unityfolder)/unity.c
+
 # --------------------------
 # Clean
 # --------------------------

numbers.c

@@ -14,13 +14,150 @@
 // 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.
+unsigned int checkArray(unsigned int *array, unsigned int len, unsigned int number)
+{
+  int free = 1;
+
+  for (int i = 0; i < len; i++)
+  {
+    if (array[i] == number)
+    {
+      free = 0;
+    }
+  }
+
+  return free;
+}
+
 unsigned int *createNumbers(unsigned int len)
 {
+  srand(time(NULL));
+  unsigned int *array = (unsigned int*)malloc(len * sizeof(unsigned int));
+  int randomNr, counter;
 
+  if(array == NULL)
+  {
+    return NULL;
+  }
+
+  for (int i = 0; i < len; i++)
+  {
+    counter = 0;
+    do
+    {
+      if (counter == 9)
+      {
+        return NULL;
+      }
+      
+      randomNr = rand() % (2 * len + 1);
+      counter++;
+    } while (!checkArray(array, i, randomNr));
+
+    array[i] = randomNr;
+    printf("%u ", array[i]);
+  }
+
+  printf("\n");
+  return array;
+}
+
+void merge(unsigned int arr[], unsigned int left, unsigned int mid, unsigned int right)
+{
+  unsigned int i, j, k;
+  unsigned int n1 = mid - left + 1;
+  unsigned int n2 = right - mid;
+
+  // Create temporary arrays
+  unsigned int leftArr[n1], rightArr[n2];
+
+  // Copy data to temporary arrays
+  for (i = 0; i < n1; i++)
+    leftArr[i] = arr[left + i];
+  for (j = 0; j < n2; j++)
+    rightArr[j] = arr[mid + 1 + j];
+
+  // Merge the temporary arrays back into arr[left..right]
+  i = 0;
+  j = 0;
+  k = left;
+  while (i < n1 && j < n2)
+  {
+    if (leftArr[i] <= rightArr[j])
+    {
+      arr[k] = leftArr[i];
+      i++;
+    }
+    else
+    {
+      arr[k] = rightArr[j];
+      j++;
+    }
+    k++;
+  }
+
+  // Copy the remaining elements of leftArr[], if any
+  while (i < n1)
+  {
+    arr[k] = leftArr[i];
+    i++;
+    k++;
+  }
+
+  // Copy the remaining elements of rightArr[], if any
+  while (j < n2)
+  {
+    arr[k] = rightArr[j];
+    j++;
+    k++;
+  }
+}
+
+void mergeSort(unsigned int arr[], unsigned int left, unsigned int right)
+{
+  if (left < right)
+  {
+
+    // Calculate the midpoint
+    unsigned int mid = left + (right - left) / 2;
+
+    // Sort first and second halves
+    mergeSort(arr, left, mid);
+    mergeSort(arr, mid + 1, right);
+
+    // Merge the sorted halves
+    merge(arr, left, mid, right);
+  }
 }
 
 // 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 temp[len];
+  unsigned int duplicate = 0;
 
+  /*if(numbers == NULL || (sizeof(numbers) / sizeof(typeof(numbers)) != len))
+  {
+    return 0;S
+  }*/
+
+  for (int i = 0; i < len; i++)
+  {
+    temp[i] = numbers[i];
+  }
+  
+  // Sorting arr using mergesort
+  mergeSort(temp, 0, len - 1);
+
+  for (int i = 0; i < len - 1; i++)
+  {
+    duplicate = temp[i];
+    if (duplicate == temp[i + 1])
+    {
+      
+      break;
+    }
+  }
+
+  return duplicate;
 }

test_numbers.c

@@ -0,0 +1,47 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "numbers.h"
+#include "unity.h"
+
+void createNumbersTest()
+{
+    unsigned int *array;
+    unsigned int len = 6;
+
+    array = createNumbers(len);
+    for (int i = 0; i < len; i++)
+    {
+        printf("%u ", array[i]);
+    }
+    printf("\n");
+    TEST_ASSERT_NOT_NULL(array);
+}
+
+void duplicateTest()
+{
+    unsigned int array[6] = {1, 4, 5, 2, 3, 1};
+    unsigned int len = 6;
+
+    TEST_ASSERT_EQUAL_INT(1, getDuplicate(array, len));
+}
+
+void setUp(void)
+{
+    // Falls notwendig, kann hier Vorbereitungsarbeit gemacht werden
+}
+
+void tearDown(void)
+{
+    // Hier kann Bereinigungsarbeit nach jedem Test durchgeführt werden
+}
+
+int main()
+{
+    UNITY_BEGIN();
+
+    printf("============================\nNumbers tests\n============================\n");
+    RUN_TEST(createNumbersTest);
+    RUN_TEST(duplicateTest);
+
+    return UNITY_END();
+}