DobleSpiel/bintree.c

51 lines
1.7 KiB
C

#include <string.h>
#include "stack.h"
#include "bintree.h"
//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. */
// 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).
TreeNode *addToTree(TreeNode *root, const void *data, size_t dataSize, CompareFctType compareFct, int *isDuplicate)
{
if(root == NULL){
TreeNode *node;
node = (TreeNode*)malloc(sizeof(TreeNode));
if(node == NULL){
return NULL;
}
node->data = malloc(dataSize);
if(node->data == NULL){
free(node);
return NULL;
}
memcpy(node->data, data, dataSize);
node->left;
node->right;
}
}
// 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.
void *nextTreeData(TreeNode *root)
{
}
// Releases all memory resources (including data copies).
void clearTree(TreeNode *root)
{
}
// Returns the number of entries in the tree given by root.
unsigned int treeSize(const TreeNode *root)
{
}