程序员面试100题之三十六，在字符串中删除特定的字符

#include "stdafx.h"
#include <cassert>
#include <cstring>

void del(char * str1, const char * str2)
{
	assert(str1);
	assert(str2);
	int count[256] = {0};
	for(int i=0;i<strlen(str2);i++)
		count[str2[i]-'\0']++;
	
	char * fast =str1, *slow=str1;
	int len = strlen(str1);
	for(int i=0;i<len;i++)
	{
		if(count[str1[i]-'\0'] == 0)
		{
			*slow = *fast;
			slow++;
		}
		fast++;
	}
	*slow='\0';

}

int _tmain(int argc, _TCHAR* argv[])
{
	char str[] = "aerou";
	char str2[] = "aeiou";
	del(str,str2);
	printf("%s\n",str);
	return 0;
}