Learn the hash table implementation in the Solong Collections framework

Hachtings in the Solong CollectionS framework implementation -Java code example introduction: Hashtable, also known as the spread list, is a commonly used data structure that is used to implement the mapping relationship between the key (key) and value.In the Solong Collections framework, the implementation of the hash table is provided, which provides developers with an efficient and convenient way to store and access data.This article will introduce the implementation of hash tables in the Solong Collections framework, and provide some Java code example for reference. 1. Overview of hash table: The hash table is a data structure based on hash functions. It realizes fast insertion, searching and deleting operation by mapping the key to the storage position.The key idea of the hash table is to use the hash function to convert the key to an array index, and then store the corresponding value at the index position.This mapping relationship can be implemented through the array structure to achieve efficient access. Second, the hash table implementation in the SOLONG COLLECTIONS framework: The Solong Collections framework provides an interface called HashCollection, and its corresponding hash table implementation HashCollectionImpl.Developers can directly use this implementation class to create and operate hash table objects. 1. Create a hash table object: By calling the constructor of HashCollectionImpl, you can create an empty hash table object. Example code: HashCollection<String, Integer> hashTable = new HashCollectionImpl<>(); 2. Add key value pair: By calling the Put method of the hash table object, you can add key value pairs to the hash table. Example code: hashTable.put("apple", 5); hashTable.put("banana", 3); 3. Get value: By calling the get method of the hash table object, you can get the corresponding value according to the key. Example code: Integer appleCount = hashTable.get("apple"); System.out.println("apple count: " + appleCount); 4. Delete the key value right: By calling the Remove method of the hash table object, you can delete the corresponding key value pair according to the key. Example code: hashTable.remove("banana"); 5. Determine whether the key exists: By calling the Containskey method of the hash table object, you can determine whether there are specified keys in the hash table. Example code: boolean containsApple = hashTable.containsKey("apple"); System.out.println("Contains apple: " + containsApple); 3. Summary: This article introduces the implementation of hash tables in the Solong Collections framework, and provides some Java code examples.By using the hash table in the Solong Collections framework, developers can more conveniently store and access data to improve the efficiency and readability of code. It should be noted that the above example is only the basic hash table operation. In actual use, it can be further expanded and optimized according to the needs.I hope this article will help you learn the implementation of the hash table in Solong Collection's framework!