From fc3508140a9d627237cb73e1405445832550d6ea Mon Sep 17 00:00:00 2001
From: Simon May <simon.d.may@proton.me>
Date: Tue, 2 Dec 2025 17:06:00 +0100
Subject: [PATCH] simons wirre gedanken

---
 bintree.c      | 18 +++++-----------
 highscores.txt |  1 -
 numbers.c      | 49 ++++++++++++++++++++++++++++++++-----------
 test_bintree.c | 56 ++++++++++++++++++++++++++++++++++----------------
 4 files changed, 80 insertions(+), 44 deletions(-)

diff --git a/bintree.c b/bintree.c
index fd5f30a..754b60c 100644
--- a/bintree.c
+++ b/bintree.c
@@ -54,27 +54,19 @@ void clearTree(TreeNode *root)
     {
         clearTree(root->left);
         free(root->left);
+        root->left = NULL;
     }
-    else if (root->right != NULL)
+    if (root->right != NULL)
     {
         clearTree(root->right);
         free(root->right);
+        root->right = NULL;
     }
-    root->data = NULL;
+    root = 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;
+    return root == NULL ? 0 : treeSize(root->left) + treeSize(root->right) + 1;
 }
\ No newline at end of file
diff --git a/highscores.txt b/highscores.txt
index 4edd5a7..e69de29 100644
--- a/highscores.txt
+++ b/highscores.txt
@@ -1 +0,0 @@
-player1;3999
diff --git a/numbers.c b/numbers.c
index 41d0980..9b5817a 100644
--- a/numbers.c
+++ b/numbers.c
@@ -23,6 +23,7 @@ unsigned int checkArray(unsigned int *array, unsigned int len, unsigned int numb
     if (array[i] == number)
     {
       free = 0;
+      break;
     }
   }
 
@@ -32,33 +33,57 @@ unsigned int checkArray(unsigned int *array, unsigned int len, unsigned int numb
 unsigned int *createNumbers(unsigned int len)
 {
   srand(time(NULL));
-  unsigned int *array = (unsigned int*)malloc(len * sizeof(unsigned int));
-  int randomNr, counter;
+  unsigned int *array = (unsigned int *)malloc(len * sizeof(unsigned int));
+  int randomNr, randomPos, counter;
 
-  if(array == NULL)
+  if (array == NULL)
   {
-    return NULL;
+    return NULL; // Fehler
   }
 
   for (int i = 0; i < len; i++)
+  {
+    array[i] = 0;
+  }
+
+  randomNr = rand() % (2 * len + 1);
+  randomPos = rand() % (len);
+  array[randomPos] = randomNr;
+  do
+  {
+    randomPos = rand() % (len);
+  } while (array[randomPos] != 0);
+  array[randomPos] = randomNr;
+
+  while (!checkArray(array, len, 0))
   {
     counter = 0;
     do
     {
-      if (counter == 9)
+      if (counter == len)
       {
         return NULL;
       }
-      
+
+      randomPos = rand() % (len);
+      counter++;
+    } while (array[randomPos] != 0);
+
+    counter = 0;
+    do
+    {
+      if (counter == len * 2)
+      {
+        return NULL;
+      }
+
       randomNr = rand() % (2 * len + 1);
       counter++;
-    } while (!checkArray(array, i, randomNr));
+    } while (!checkArray(array, len, randomNr));
 
-    array[i] = randomNr;
-    printf("%u ", array[i]);
+    array[randomPos] = randomNr;
   }
 
-  printf("\n");
   return array;
 }
 
@@ -145,7 +170,7 @@ unsigned int getDuplicate(const unsigned int numbers[], unsigned int len)
   {
     temp[i] = numbers[i];
   }
-  
+
   // Sorting arr using mergesort
   mergeSort(temp, 0, len - 1);
 
@@ -154,7 +179,7 @@ unsigned int getDuplicate(const unsigned int numbers[], unsigned int len)
     duplicate = temp[i];
     if (duplicate == temp[i + 1])
     {
-      
+
       break;
     }
   }
diff --git a/test_bintree.c b/test_bintree.c
index d33a93d..4df2dbe 100644
--- a/test_bintree.c
+++ b/test_bintree.c
@@ -4,38 +4,57 @@
 #include "unity.h"
 
 
-void treeTest()
+void sizeTest()
 {
-    TreeNode root;
-    TreeNode node1;
-    TreeNode node2;
+    TreeNode *root = (TreeNode *)malloc(sizeof(TreeNode));
+    TreeNode *node1 = (TreeNode *)malloc(sizeof(TreeNode));
+    TreeNode *node2 = (TreeNode *)malloc(sizeof(TreeNode));
 
     int dataRoot = 2;
     int dataNode1 = 1;
     int dataNode2 = 3;
 
+    root->data = &dataRoot;
+    root->left = (TreeNode *)node1;
+    root->right = (TreeNode *)node2;
 
-    root.data = &dataRoot;
-    root.left = &node1;
-    root.right = &node2;
+    node1->data = &dataNode1;
+    node1->left = NULL;
+    node1->right = NULL;
 
-    node1.data = &dataNode1;
-    node1.left = NULL;
-    node1.right = NULL;
+    node2->data = &dataNode2;
+    node2->left = NULL;
+    node2->right = NULL;
 
-    node2.data = &dataNode2;
-    node2.left = NULL;
-    node2.right = NULL;
+    TEST_ASSERT_EQUAL_INT(3,treeSize(root));
+}
 
+void clearTest()
+{
+    TreeNode *root = (TreeNode *)malloc(sizeof(TreeNode));
+    TreeNode *node1 = (TreeNode *)malloc(sizeof(TreeNode));
+    TreeNode *node2 = (TreeNode *)malloc(sizeof(TreeNode));
 
+    int dataRoot = 2;
+    int dataNode1 = 1;
+    int dataNode2 = 3;
 
-    TEST_ASSERT_EQUAL_INT(3,treeSize(&root));
+    root->data = &dataRoot;
+    root->left = (TreeNode *)node1;
+    root->right = (TreeNode *)node2;
 
+    node1->data = &dataNode1;
+    node1->left = NULL;
+    node1->right = NULL;
 
-    clearTree(&root);
-    TEST_ASSERT_EQUAL_INT(0,treeSize(&root));
+    node2->data = &dataNode2;
+    node2->left = NULL;
+    node2->right = NULL;
 
-    
+    TreeNode *ptr = root;
+
+    clearTree(ptr);
+    TEST_ASSERT_EQUAL_INT(0,treeSize(root));
 }
 
 void setUp(void)
@@ -54,7 +73,8 @@ int main()
 
     printf("============================\nNumbers tests\n============================\n");
 
-    RUN_TEST(treeTest);
+    RUN_TEST(sizeTest);
+    RUN_TEST(clearTest);
 
     return UNITY_END();
 }
\ No newline at end of file