C Program To Implement Dictionary Using Hashing Algorithms < 360p >

Enter your choice: 1 Enter key (string): banana Enter integer value: 12 Inserted ('banana', 12) at index 3

An array of structs, where each struct holds the word (key) and its definition (value).

An array of pointers (buckets) that store the head of a linked list. c program to implement dictionary using hashing algorithms

Before diving into hashing, consider alternative dictionary implementations:

create_node() allocates memory for the Node structure and duplicates the key string using malloc and strcpy . It sets the value and the next pointer to NULL . If any allocation fails, the program prints an error and exits. Enter your choice: 1 Enter key (string): banana

free(old_buckets);

dictionary is an abstract data type that maps unique keys to values. Since C lacks a built-in dictionary like Python or C#, you can implement one efficiently using a hash table . This approach provides average constant-time complexity, , for insertion, search, and deletion. 1. Define the Data Structures It sets the value and the next pointer to NULL

This function adds a new key-value pair or updates the value if the key already exists.

Converts a string key into an index within the array range. A popular approach is to sum ASCII values with a prime number multiplier (e.g.,

Therefore, our implementation will use with singly linked lists.

printf("Value of apple: %s\n", get(dict, "apple")); printf("Value of banana: %s\n", get(dict, "banana")); printf("Value of carrot: %s\n", get(dict, "carrot"));