C Program To Implement Dictionary Using Hashing Algorithms |verified| Here

// Check if key already exists KeyValuePair *current = table->buckets[index]; while (current) if (strcmp(current->key, key) == 0) // Key exists: update value current->value = value; return;

typedef struct Dictionary Entry **buckets; // Array of pointers to linked lists unsigned long size; // Current number of buckets unsigned long count; // Number of key-value pairs stored unsigned long (*hash_func)(const char *); // Function pointer for hash algorithm Dictionary;

// 5. Cleanup void free_dictionary(Dictionary *dict) for (int i = 0; i < dict->size; i++) KeyValue *current = dict->table[i]; while (current != NULL) KeyValue *temp = current; current = current->next; free(temp->key); free(temp); c program to implement dictionary using hashing algorithms

Add mutex locks for concurrent access in multithreaded programs.

Prime numbers tend to minimize collisions in hash tables. If you expect a massive dataset, initializing the hash table with a large prime number (e.g., 65521 ) is a good baseline. Conclusion // Check if key already exists KeyValuePair *current

We need a deterministic function that converts a string into an integer. A popular choice is the algorithm (by Daniel J. Bernstein), which uses bit shifting to generate a well-distributed hash.

void dict_put(Dictionary *dict, const char *key, const char *value) unsigned int index = hash(key, dict->size); // Search for existing key in the chain Entry *curr = dict->buckets[index]; while (curr) if (strcmp(curr->key, key) == 0) // Key exists → update value strncpy(curr->value, value, MAX_VALUE_LEN - 1); curr->value[MAX_VALUE_LEN - 1] = '\0'; return; If you expect a massive dataset, initializing the

We will implement because it handles high load factors gracefully and is simpler to manage in C.

// Cleanup free_dictionary(myDict);

A dictionary is a data structure that stores data in . While high-level languages like Python or Java have built-in dictionary classes, C requires manual implementation.