unsigned int hash(const char *key, int size) unsigned int hash_val = 5381; int c; while ((c = *key++)) hash_val = ((hash_val << 5) + hash_val) + c; // djb2: hash * 33 + c return hash_val % size; Use code with caution. Copied to clipboard Essential Operations
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To implement a dictionary via hashing, you need to understand three core components: c program to implement dictionary using hashing algorithms
: Always apply % table_size to the result to keep the index within bounds.
-------------------------------------------------------------*/ void dict_insert(Dict *d, const char *key, int value) unsigned int idx = hash(key, d->size); Node *curr = d->table[idx]; unsigned int hash(const char *key, int size) unsigned
The main() function creates a dictionary with the default size and presents a menu loop. It uses fgets() to read keys (handles spaces) and strcspn() to remove the newline character. The menu allows insertion, search, deletion, display, and viewing the count.
: Hash the key, then add a new node to the front of the linked list at that index. It uses fgets() to read keys (handles spaces)
value = search(dict, "kiwi", &found); if (found) printf("kiwi -> %d\n", value); else printf("kiwi not found\n");