67 lines
1.5 KiB
C
67 lines
1.5 KiB
C
#include "binary_search_tree.h"
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#include <stdlib.h>
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static node_t *insert_node(node_t *root, int value);
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static void inorder_traversal(node_t *node, int *array, int *index);
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static node_t *new_node(int value) {
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node_t *node = (node_t *)malloc(sizeof(node_t));
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if (node == NULL) {
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return NULL;
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}
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node->data = value;
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node->left = NULL;
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node->right = NULL;
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return node;
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}
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node_t *build_tree(int *tree_data, size_t tree_data_len) {
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node_t *root = NULL;
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for (size_t i = 0; i < tree_data_len; i++) {
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root = insert_node(root, tree_data[i]);
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}
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return root;
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}
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static node_t *insert_node(node_t *root, int value) {
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if (root == NULL) {
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return new_node(value);
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}
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if (value < root->data) {
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root->left = insert_node(root->left, value);
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} else {
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root->right = insert_node(root->right, value);
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}
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return root;
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}
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void free_tree(node_t *tree) {
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if (tree == NULL) {
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return;
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}
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free_tree(tree->left);
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free_tree(tree->right);
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free(tree);
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}
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static void inorder_traversal(node_t *node, int *array, int *index) {
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if (node == NULL) {
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return;
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}
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inorder_traversal(node->left, array, index);
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array[*index] = node->data;
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(*index)++;
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inorder_traversal(node->right, array, index);
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}
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int *sorted_data(node_t *tree) {
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if (tree == NULL) {
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return NULL;
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}
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int *array = (int *)malloc(sizeof(int) * 100);
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int index = 0;
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inorder_traversal(tree, array, &index);
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return array;
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}
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