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这题竟然可以发现标准hash的bug......

Posted by alawing at 2008-11-26 15:06:19 on Problem 2503
经过我提交本题20+次
加上搜索网上数据得出
int ELFhash(char* key)
{
	unsigned long h = 0;
	while(*key)
	{
		h = (h<<4) + *key++;
		unsigned long g = h & 0Xf0000000L;
		if(g)
			h ^= g >> 24;
		h &= ~g;
	}
	return h % M;
}
这个hash算法有覆盖= =;
例如eeeeeefvnb eeeeeegfnb这2个hash值竟然一样(函数里h算出来的就一样)
厄。。。。。


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