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/**************************************************
 * time33哈希函数，又叫DJBX33A，Bernstein's hash
 * 小写英文词汇适合33, 大小写混合使用65。
 * time33比较适合的是英文词汇的hash.
 **************************************************/
#include <stdio.h>
#include <string.h>

unsigned long time33(const char *str) { 
    unsigned long hash = 0; 
    unsigned int len = strlen(str);
    for (int i = 0; i < len; i++) 
        hash = ((hash <<5) + hash) + (unsigned long) str[i]; 
    return hash; 
}

int main(int argc, const char *argv[]) {
    char *str = "this is a test string"; 
    printf("Hash:%lu",time33(str));
    return 0;
}