哈希函数(英語:Hash function)又称散列函数、散列函数、摘要算法、单向散列函数。散列函数把消息或数据压缩成摘要,使得数据量变小,将数据的格式固定下来。该函数将数据打乱混合,重新创建一个(哈希函数返回的值)称为指纹、哈希值、哈希代码、摘要或散列值(hash values,hash codes,hash sums,或hashes)
= '\0'; i++) { hash += str[i]; // 这里使用了字符的ASCII值 } return hash % HASH_TABLE_SIZE; // 取模运算以适应哈希表大小 } int main() { const char *input = "Hello, World!"; unsigned int hash_value = simple_hash((const unsigned char *)input); printf("The hash value of ...
代码语言:javascript 代码运行次数:0 运行 AI代码解释 unsigned intSDBMHash(char*str){unsigned int hash=0;while(*str){// equivalent to: hash = 65599*hash + (*str++);hash=(*str++)+(hash<<6)+(hash<<16)-hash;}return(hash&0x7FFFFFFF);}// RS Hash Functionunsigned intRSHash(char*str){...
...function hash(input) { let hash = 0; for (let c of input) { hash += c.charCodeAt(0); } return...我们通过散列最小化了这个搜索步骤,这也是 murmur3 进行速度优化的原因。哈希函数越快,我们找到合适的存储桶进行搜索的速度就越快,哈希映射的整体速度就越快。 这也是为什么减少碰撞如此重要的...
return hash; } /* End Of RS Hash Function */ unsigned int JSHash(char* str, unsigned int len) { unsigned int hash = 1315423911; unsigned int i = 0; for(i = 0; i < len; str++, i++) { hash ^= ((hash << 5) + (*str) + (hash >> 2)); ...
hash = hash * a + (*str); a = a * b; return hash; /* End Of RS Hash Function */ unsigned int JSHash(char* str, unsigned int len) unsigned int hash = 1315423911; unsigned int i = 0; for(i = 0; i < len; str++, i++) ...
break;}return{};}// 线性探测的删除boolremove(constK&key){size_tindex=hashFunction(key);size_...
return hash;} /* End Of JS Hash Function */ unsigned int PJWHash(char* str, unsigned int len){ const unsigned int BitsInUnsignedInt = (unsigned int)(sizeof(unsigned int) * 8);const unsigned int ThreeQuarters = (unsigned int)((BitsInUnsignedInt * 3) / 4);const unsigned int One...
在C语言中,实现hash函数通常涉及到以下几个步骤:1. 选择一个合适的哈希表大小,通常为一个质数,如素数表大小。2. 定义一个哈希函数,通常是将输入的键(key)转换为一个整数值,这个整数值...
mixes of the hash to ensure the last few* bytes are well-incorporated. */h^=h>>13;h*=m;h^=h>>15;return(unsignedint)h;}unsignedintstr_hash(void*key){returnmurmur_hash(key,20);}/* Thomas Wang's 32 bit Mix Function */unsignedintdictIntHashFunction(unsignedintkey){key+=~(key<<...