C Program To Implement Dictionary Using Hashing Algorithms Access
int index = hash_function(key) % table->size; Chapter 4: Complete Implementation of the Dictionary Let's build the dictionary step by step. 4.1 Create and Initialize Dictionary // Create a new hash table HashTable* create_hash_table(int size) HashTable *table = (HashTable*)malloc(sizeof(HashTable)); if (!table) return NULL; table->size = size; table->count = 0;
// DJB2 hash function for strings unsigned long hash_djb2(const char *str) unsigned long hash = 5381; int c; while ((c = *str++)) hash = ((hash << 5) + hash) + c; // hash * 33 + c c program to implement dictionary using hashing algorithms
// Re-insert all old entries for (int i = 0; i < old_size; i++) KeyValuePair *current = old_buckets[i]; while (current) insert(table, current->key, current->value); KeyValuePair *temp = current; current = current->next; free(temp->key); free(temp); int index = hash_function(key) % table->size; Chapter 4:
// Cleanup destroy_hash_table(dict);
While C lacks built-in dictionaries, mastering this implementation gives you complete control over performance and memory—something higher-level languages abstract away. Whether you're building a compiler symbol table, a database index, or a caching system, this hash table dictionary will serve you well. int main() // Create a dictionary with 10007
int main() // Create a dictionary with 10007 buckets HashTable *dict = create_hash_table(TABLE_SIZE); if (!dict) printf("Failed to create dictionary\n"); return 1;
