Test Stack geschrieben

bintree.c

@@ -12,7 +12,53 @@
 // if isDuplicate is NULL, otherwise ignores duplicates and sets isDuplicate to 1 (or to 0 if a new entry is added).
 TreeNode *addToTree(TreeNode *root, const void *data, size_t dataSize, CompareFctType compareFct, int *isDuplicate)
 {
+    if(data!= NULL && dataSize > 0)
+      {
+        if(root == NULL)      //Abbruchbedingung: Keine Wurzel vorhanden, deshalb fügen wir hier einen neuen Knote ein
+          {
+          TreeNode *newNode = (TreeNode *)malloc(sizeof(TreeNode));
+          if(newNode == NULL)
+            {
+            return NULL;
+            }
+          newNode->data = malloc(dataSize);
+          if(newNode->data == NULL)
+            {
+            free(newNode);
+            return NULL;
+            }
+          memcpy(newNode->data, data, dataSize);
+          newNode->left = NULL;
+          newNode->right = NULL;
 
+          if(isDuplicate!= NULL)
+            {
+              *isDuplicate = 0;
+            }
+
+          return newNode;
+          }
+        int cmp = compareFct(root->data, data);
+        if(cmp > 0)
+          {
+          root->left = addToTree(root->left, data, dataSize, compareFct, isDuplicate);
+          }
+        else if(cmp < 0){
+          root->right = addToTree(root->right, data, dataSize, compareFct, isDuplicate);
+        }
+        else
+          {
+            if (isDuplicate) {
+              *isDuplicate = 1;
+            }
+            else {
+              // isDuplicate == NULL → trotzdem ein Duplikat einfügen (z.B. rechts)
+              root->right = addToTree(root->right, data, dataSize, compareFct, NULL);
+            }
+          }
+          return root;
+      }
+    return NULL;
 }
 
 // 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.
@@ -20,17 +66,40 @@ TreeNode *addToTree(TreeNode *root, const void *data, size_t dataSize, CompareFc
 // push the top node and push all its left nodes.
 void *nextTreeData(TreeNode *root)
 {
+  if(root == NULL)
+    {
 
+
+    }
+  stackNode.top(root);
 }
 
 // Releases all memory resources (including data copies).
 void clearTree(TreeNode *root)
 {
+    if (root == NULL)
+      {
+        return;
+      }
+    // Erst linken Knoten löschen
+    clearTree(root->left);
 
+    // Dann rechten Knoten löschen
+    clearTree(root->right);
+
+    // Dann eigenen Speicher freigeben
+    free(root->data);
+    free(root);
 }
 
+
 // Returns the number of entries in the tree given by root.
 unsigned int treeSize(const TreeNode *root)
 {
+  if(root == NULL)
+    {
+    return numNodes;
+    }
+  return 1 + treeSize(root->left) + treeSize(root->right); //1, weil eine Wurzel gefunden wurde und dann immer plus eins fuer einen Teilbaum
 
 }

highscores.txt

@@ -1 +1,2 @@
+Silvana;9944
 player1;3999

stack.c

@@ -10,24 +10,57 @@
 // Pushes data as pointer onto the stack.
 StackNode *push(StackNode *stack, void *data)
 {
-
+  if (!data) 
+  {
+    return stack; //Nichts pushen
+  }
+    //if(stack && data){
+      StackNode *t = (StackNode *)malloc(sizeof(StackNode));
+      if(!t)
+        {
+        return NULL; //Speicherfehler
+        }
+      t->next = stack;
+      t->data = data;
+      return t; //Gibt den ersten StackNode des Stacks zurueck
+      //}
+    return NULL;
 }
 
 // Deletes the top element of the stack (latest added element) and releases its memory. (Pointer to data has to be
 // freed by caller.)
 StackNode *pop(StackNode *stack)
 {
-
+    if(stack)
+      {
+          StackNode *t = stack->next; //Naechstes Element im Stack wird erstes Element
+          free(stack);
+          return t;
+      }
+      else
+      {
+        return NULL;
+      }
 }
 
 // Returns the data of the top element.
 void *top(StackNode *stack)
 {
-
+    if(stack)
+      {
+      return stack->data;
+      }
+    return NULL;
 }
 
 // Clears stack and releases all memory.
 void clearStack(StackNode *stack)
 {
-
+  while(stack)
+  {
+      StackNode *tmp = stack; //merkt sich den momentanen obersten Knoten
+      stack = stack->next; //setzt den obersten Knoten auf den Zweiten im Stack
+      free(tmp->data);
+      free(tmp);
+  }
 }

stack.h

@@ -8,6 +8,10 @@ The latest element is taken from the stack. */
 #include <stdlib.h>
 
 //TODO: passenden Datentyp als struct anlegen
+typedef struct StackNode {
+  void* data;
+  struct StackNode *next;
+  }StackNode;
 
 // Pushes data as pointer onto the stack.
 StackNode *push(StackNode *stack, void *data);

test_stack.c

@@ -0,0 +1,64 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include "stack.h"
+
+//Testfunkionen zu push, pull, top & clearStack schreiben
+
+void test(char *name, int condition) {
+    if (condition) {
+        printf("[OK]   %s\n", name);
+    } else {
+        printf("[FAIL] %s\n", name);
+    }
+}
+
+int main() {
+
+    StackNode *stack = NULL;
+
+    // Werte dynamisch anlegen
+    int *val1 = malloc(sizeof(int));
+    *val1 = 5;
+    stack = push(stack, val1);
+    test("push(5) legt 5 oben auf den Stack", *(int*)stack->data == 5);
+
+    int *val2 = malloc(sizeof(int));
+    *val2 = 6;
+    stack = push(stack, val2);
+    test("push(6) legt 6 oben auf den Stack", *(int*)stack->data == 6);
+
+    int *val3 = malloc(sizeof(int));
+    *val3 = 24;
+    stack = push(stack, val3);
+    test("push(24) legt 24 oben auf den Stack", *(int*)stack->data == 24);
+
+    // Test top()
+    int t = *(int*)top(stack);
+    test("top() liefert 24", t == 24);
+
+    // Test pop()
+    StackNode *tmp;
+    
+    tmp = stack;
+    stack = pop(stack);
+    free(tmp->data); // Daten freigeben
+    free(tmp);       // Knoten freigeben
+    test("pop() entfernt 24, 6 ist jetzt oben", *(int*)stack->data == 6);
+
+    tmp = stack;
+    stack = pop(stack);
+    free(tmp->data);
+    free(tmp);
+    test("pop() entfernt 6, 5 ist jetzt oben", *(int*)stack->data == 5);
+
+    tmp = stack;
+    stack = pop(stack);
+    free(tmp->data);
+    free(tmp);
+    test("pop() entfernt 5, Stack ist jetzt leer", stack == NULL);
+
+    // Am Ende Stack leeren (falls noch Elemente übrig)
+    clearStack(stack);
+
+    return 0;
+}