bintree.c

@@ -51,34 +51,10 @@ TreeNode *addToTree(TreeNode *root, const void *data, size_t dataSize,
 // 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.
 // Use your implementation of a stack to organize the iterator. Push the root node and all left nodes first. On returning the next element,
 // push the top node and push all its left nodes.
-// Initialisiert den Stack mit der Wurzel und allen linken Nachfolgern
+void *nextTreeData(TreeNode *root)
-StackNode* initTraversal(TreeNode* root) {
+{
-    StackNode* stack = NULL;
-    TreeNode* current = root;
 
-    while (current != NULL) {
-        stack = push(stack, current);
-        current = current->left;
 }
-    return stack;
-}
-void* nextTreeData(StackNode** stack) {
-    if (*stack == NULL) {
-        return NULL; // Traversierung beendet
-
-    // Obersten Knoten holen
-    TreeNode* node = (TreeNode*)top(*stack);
-    *stack = pop(*stack);
-
-    // Falls rechter Teilbaum existiert, diesen und alle linken Nachfolger auf den Stack legen
-    TreeNode* current = node->right;
-    while (current != NULL) {
-        *stack = push(*stack, current);
-        current = current->left;
-    }
-
-    return node->data;
-}}
 
 // Releases all memory resources (including data copies).
 void clearTree(TreeNode *root)
@@ -99,9 +75,5 @@ void clearTree(TreeNode *root)
 // Returns the number of entries in the tree given by root.
 unsigned int treeSize(const TreeNode *root)
 {
- if (root == NULL) {
+
-        return 0; // Basisfall: leerer Teilbaum
-    }
-    // Rekursiv: Größe = 1 (aktueller Knoten) + Größe des linken Teilbaums + Größe des rechten Teilbaums
-    return 1 + treeSize(root->left) + treeSize(root->right);
 }