Summary of research on hash table and hash functionWith the increasing of information level, the data has been replaced computing as the center of Information Computing, the demand for storage has been increasing the volume of explosive growth trend,
Note: This article is divided into three parts,The first part is a detailed explanation of the top K algorithm of Baidu interview questions; the second part is a detailed description of the hash table algorithm; the third part is to build the
11. Thoroughly parse the Hash table algorithm from start to end
Author: July, wuliming, pkuoliverSource:Http://blog.csdn.net/v_JULY_v.Note: This article is divided into three parts,The first part is a detailed explanation of the Top K algorithm of
Text/Xuan soul 1. collision between Hash and Hash
Hash is a type of output that converts an input of any length into an output of a fixed length. An output of a fixed length can represent the input in "Actual Application Scenario. Hash Functions are
Text/Xuan soul 1. collision between Hash and Hash
Hash is a type of output that converts an input of any length into an output of a fixed length. An output of a fixed length can represent the input in "Actual Application Scenario. Hash Functions are
In-depth understanding of the implementation of PHP kernel (6) hash tables and PHP hash tables. In-depth understanding of the implementation of the PHP kernel (6) hash table and the PHP hash table, and in-depth understanding of the original article:
Common scenarios of this algorithm
Search for substrings in the string, and search for substrings in the ansible form in the string.
String search and matching
A string can be interpreted as a character array. Characters can be converted to
You can access this article in my personal blog:Http://acbingo.cn/2015/08/09/Rolling%20Hash (rabin-karp%e7%ae%97%e6%b3%95)%e5%8c%b9%e9%85%8d%e5%ad%97%e7%ac%a6% e4%b8%b2/Common scenarios for this algorithmFinds a substring in a string, finds a
I. Integer Hash Functions
There are three common methods: Direct remainder method, Product Integer method, and square method. The three methods are discussed below. The following assumes that our keyword is that the capacity of the hash table is,
Basic ConceptsThe so-called perfect hash function refers to a hash function without conflict, that is, to any key1! = Key2 has h (key1 )! = H (key2 ).Set the custom domain to X, the value range to Y, n = | X |, m = | Y |, then there must be m> = n.
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