int val; if (ht_get(dict, "banana", &val)) printf("banana => %d\n", val); else printf("banana not found\n");
========== DICTIONARY MENU ========== 1. Insert/Update key-value pair 2. Search for a key 3. Delete a key 4. Display all entries 5. Show number of entries 6. Exit Enter your choice: 1 Enter key (string): apple Enter integer value: 5 Inserted ('apple', 5) at index 92
The core of this data structure is the . A hash table is essentially an array of fixed size. When you insert a key-value pair, the dictionary uses a Hash Function to process the key and compute a specific index in the array where the value should be stored. 1. The Hash Function
free(table->buckets); free(table);
As stated, we adopt . Each hash table slot will be a pointer to the head of a linked list. Each list node will contain:
destroy_table(dict); return 0;
printf("\n");
There are two main families of collision resolution:
Alternative functions like (used in GNU dbm ) or FNV‑1a are also excellent choices. The modulus operation % table_size brings the hash into the valid range [0, table_size-1] .
Implementing a dictionary in C using a is the most efficient way to achieve near-constant time ( ) for searching, inserting, and deleting data. c program to implement dictionary using hashing algorithms
void free_dictionary(Dictionary* dict) if (!dict) return; for (int i = 0; i < TABLE_SIZE; i++) Node* current = dict->buckets[i]; while (current != NULL) Node* temp = current; current = current->next; free(temp->key); free(temp->value); free(temp); free(dict); Use code with caution. Complete Program Execution
/* -------------------------------------------------------------
IT LifeStyle