C Program To Implement — Dictionary Using Hashing Algorithms [updated]
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while (entry != NULL) if (strcmp(entry->key, key) == 0) free(entry->value); entry->value = (char*) malloc(strlen(value) + 1); strcpy(entry->value, value); return;
delete(dict, "banana");
unsigned long hash_string(const char *str, int table_size) unsigned long hash = 5381; int c; while ((c = *str++)) hash = ((hash << 5) + hash) + c; // hash * 33 + c return hash % table_size;
A dictionary supports three primary operations: c program to implement dictionary using hashing algorithms
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int main() Dictionary myDict = 0 ; // Initialize buckets to NULL insert(&myDict, "Apple" , "A sweet red fruit" ); insert(&myDict, "C" , "A powerful programming language" ); char *result = search(&myDict, "Apple" ); if (result) printf( "Apple: %s\n" , result); return 0 ; Use code with caution. Copied to clipboard Quick Way to Implement Dictionary in C - Stack Overflow : while (entry
| Method | Description | Pros | Cons | |--------|-------------|------|------| | | Each bucket points to a linked list of entries | Simple, no limit on entries | Extra memory for pointers | | Open Addressing | Probe sequentially for next free slot | Cache-friendly, no pointers | Table can fill up, deletion is tricky |
: Standard operations like insert , search , and delete . 2. Implementation Guide Define Structures key) == 0) free(entry->
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insert(dict, "apple", "fruit"); insert(dict, "banana", "fruit"); insert(dict, "carrot", "vegetable");