aufräumen

bintree.c

@@ -45,18 +45,36 @@ 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 counter = 0;
-
-    if(root != NULL)
+    int counterL, counterR = 0;
+    if (root->left != NULL)
     {
-       treeSize(root->left);
-       counter++;
-       treeSize(root->right);
+        counterL = treeSize(root->left) + 1;
     }
+    else if (root->right != NULL)
+    {
+        counterR = treeSize(root->right) + 1;
+    }
+
+    return counterL + counterR;
 }

numbers.c

@@ -136,6 +136,11 @@ 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];