From a3b951d0a9c935953348f0173cf0c5df02d1985d Mon Sep 17 00:00:00 2001
From: Simon May <simon.d.may@proton.me>
Date: Tue, 2 Dec 2025 14:44:04 +0100
Subject: [PATCH] =?UTF-8?q?aufr=C3=A4umen?=
MIME-Version: 1.0
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---
 bintree.c | 40 +++++++++++++++++++++++++++++-----------
 numbers.c |  5 +++++
 2 files changed, 34 insertions(+), 11 deletions(-)

diff --git a/bintree.c b/bintree.c
index 2927e04..fd5f30a 100644
--- a/bintree.c
+++ b/bintree.c
@@ -2,11 +2,11 @@
 #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),
-    * `nextTreeData`: Traversierung mit Hilfe des zuvor implementierten Stacks. */
+ * `clearTree`: gibt den gesamten Baum frei (rekursiv),
+ * `treeSize`: zählt die Knoten im Baum (rekursiv),
+ * `nextTreeData`: Traversierung mit Hilfe des zuvor implementierten Stacks. */
 
 // Adds a copy of data's pointer destination to the tree using compareFct for ordering. Accepts duplicates
 // if isDuplicate is NULL, otherwise ignores duplicates and sets isDuplicate to 1 (or to 0 if a new entry is added).
@@ -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;
 }
\ No newline at end of file
diff --git a/numbers.c b/numbers.c
index cd016a4..41d0980 100644
--- a/numbers.c
+++ b/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];