pvjc24/a3/binary_search_tree.c

#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "binary_search_tree.h"

void free_tree(node_t *tree) {
    if (tree == NULL) {
        return;
    }

    free_tree(tree->left);
    free_tree(tree->right);

    free(tree);
}
int *sorted_data(node_t *tree) {
 if (tree == NULL) {
        return NULL;
    }

    size_t num_nodes = 0;
    node_t *current = tree;
    while (current != NULL) {
        num_nodes++;
        current = current->right;
    }

    int *sorted_array = (int *)malloc(num_nodes * sizeof(int));
    if (sorted_array == NULL) {
        return NULL;
    }

    size_t index = 0;

    inorder_traversal(tree, sorted_array, &index);

    return sorted_array;
}

node_t *build_tree(int *tree_data, size_t tree_data_len){

    node_t *koren = (node_t *)malloc(sizeof(node_t));

    if(tree_data == NULL || tree_data_len == 0){
        return 0;
    }

    if(tree_data != NULL && tree_data_len != 0){
        koren->data = tree_data[0];
        koren->left = (node_t *)malloc(sizeof(node_t));
        koren->left->data = tree_data[0];
    }

    return koren;
}