#include <stdio.h> #include <stdint.h> #include <stdlib.h> #include <string.h> #include <sys/time.h> #define MODE 1 // 1 = hash each word individually; 2 = hash the entire file #define MAXLEN 50 // maximum length of a word #define MAXWORDS 500000 // maximum number of words ...
Qt has qhash, and C++11 has std::hash in <functional>, Glib has several hash functions in C, and POCO has some hash function. I quite often have hashing functions involving primes (see Bézout's identity) and xor, like e.g. #define A 54059 /* a prime */ #define B 76963 /* an...
h.setFunc(&f[0]);intanswer =-1;intx =0;strings;cout<<"Commands:\n0 - exit\n";cout<<"1 - add string to hash\n";cout<<"2 - remove string from hash\n";cout<<"3 - find string from hash\n";cout<<"4 - get status\n";cout<<"5 - set func(1..3)\n";while(answer !=...
这个hash算法的名称叫:BKDR Hash Function This hash function comes from Brian Kernighan and Dennis Ritchie's book "The C Programming Language". It is a simple hash function using a strange set of possible seeds which all constitute a pattern of 31...31...31 etc, it seems to be very simi...
计算哈希算法冲突率并不难,比如可以一次性将所有单词的 hash code 算出,并放入 Set 中去除重复值。之后拿单词数减去 set.size() 即可得出冲突数,有了冲突数,冲突率就可以算出来了。当然,如果使用 JDK8 提供的流式计算 API,则可更方便算出,代码片段如下: ...
我用GCC在Ubuntu中定义了一个hash_map<string,string,stringHashFunction> stringHashMap。我保证stringHashFunction是正确的,因为我可以正确地在hash_map中使用字符串当我打电话的时候 string a = "sgsg"; string temp = stringHash[a]; 编译器报告的错误是:错误:将‘const __gnu_cxx::hash_map,std::...
和之前的hash算法一样。需要在rule.xml中配置tableRule和function。 tableRule标签,name对应的是规则的名字,而rule标签中的columns则对应的分片字段,这个字段必须和表中的字段一致。algorithm则代表了执行分片函数的名字。 function标签,name代表分片算法的名字,算法的名字要和上面的tableRule中的标签相对应。class:指定分...
=hash_string(&md5_algorithm, sexp_format(self->key, SEXP_CANONICAL,0),1);#endifelsereturn0;break;default:return0; }returnlsh_string_eq(h1, h2); } 开发者ID:macssh,项目名称:macssh,代码行数:40,代码来源:spki.c 示例2: aic_cmd_appousers ...
functionHashMap(capacity){ this.capacity = capacity;/*www.java2s.com*/this.table = [] }String.prototype.hashCode =function() {varhash = 0;if(this.length== 0) {returnhash }for(vari = 0; i < this.length; i++) { char = this.charCodeAt(i); hash = ((hash<<5)-hash)+char; has...
A string expression that is used to calculate a hash value. The STRING, CHAR, VARCHAR, and BINARY data types are supported. Return value A hash value calculated by using a string expression is returned. The hash value is 64 bytes in length. In the Hive-compatible data type edition, the...