What is the hash construction method of character string keywords

What this article shares to you is about the hash construction method of character string keywords. The editor thinks it is very practical, so I share it with you. I hope you can learn something after reading this article. Let's take a look at it with the editor.

The hash construction method of string keywords is "ASCII code addition", and the algorithm statement is "h (key) = (Σ key [I]) mode TableSize".

Hash Construction of string keywords

ASCII code addition method

H (key) = (Σ key [I]) mode TableSize

Related introduction:

A hash table (Hash table, also known as a hash table) is a data structure that is accessed directly based on key code values (Key value). That is, it accesses the record by mapping the key value to a location in the table to speed up the lookup. This mapping function is called a hash function, and the array in which records are stored is called a hash table.

Given table M, there exists a function f (key). For any given key value key, if the address of the record containing the keyword in the table can be obtained after substituting the function, table M is called Hash table and function f (key) is Hash function.

The above is the hash construction method of character string keywords, and the editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.