Replace % size with & (size - 1) when size is a power of two.
unsigned long index = hash & (dict->size - 1);
In C, we define the structure of our dictionary using struct . We need two structures: one for the individual linked list nodes ( Node ) and one for the table container itself ( Dictionary ).
int index = hash_function(key) % table->size; c program to implement dictionary using hashing algorithms
#include <stdio.h> #include <stdlib.h> #include <string.h>
Inserting entries...
// Function to delete a key-value pair from the dictionary void delete(Dictionary* dict, char* key) int index = hash(key, dict->size); DictionaryEntry* entry = dict->table[index]; DictionaryEntry* prev = NULL; Replace % size with & (size - 1) when size is a power of two
: Handling initialization, insertion, searching, and deletion.
char* dict_get(Dictionary *dict, const char *key) unsigned int index = hash(key, dict->size); Entry *curr = dict->buckets[index]; while (curr) if (strcmp(curr->key, key) == 0) return curr->value; curr = curr->next;
current = current->next;
Hashing is a technique used to map a large input (such as a string or an integer) to a fixed-size output, known as a hash value or digest. This hash value is used to identify the location of the data in a data structure, making it possible to retrieve the data efficiently.
// Insert or update a key-value pair void insert(HashTable *table, const char *key, int value) if (!table
Finds the correct bucket using the hash function, then traverses the linked list to find the exact key. This hash value is used to identify the
// Function to insert a key-value pair into the dictionary void insert(Dictionary* dict, char* key, char* value) int index = hash(key, dict->size); DictionaryEntry* entry = dict->table[index];
Deleting 'orange'... 'orange' deleted successfully.