兄弟单词

#include <stdio.h>


struct word
{
	unsigned char ucWord[51];
	struct word *pNext;
};


/*获取字符串长度*/
unsigned int MyStrLen(const char* p)
{
	if(NULL == p)
		return 0;
	unsigned int len = 0;
	while('\0'!=*p++)
		len++;
	return len;
}

/* 字符串比较函数
 * =0,单词相等；>0，str1在str2之后；<0，str1在str2之前;-26,参数错误
 */
int MyStrCmp(const char *str1,const char *str2)
{
	if(NULL == str1 || NULL == str2 || *str1 == '\0' || *str2 == '\0')
		return -26;


	while((*str1 == *str2 )&& *str1)
	{
		str1++;
		str2++;
	};
    if( *str1 > *str2  )
		return 1;
	else if(*str1 < *str2 )
		return -1;
	else
		return 0;

}

/*兄弟单词判断*/
bool IsBrotherWord(const char* word1,const char* word2)
{
	if(NULL==word1||NULL==word2)
		return false;
	if(MyStrLen(word1) != MyStrLen(word2))
		return false;
	if(0 == MyStrCmp(word1,word2))
		return false;

	int AlphaCnt1[26]={0};
	int AlphaCnt2[26]={0};
	while('\0'!=*word1&&'\0'!=*word2)
	{
		AlphaCnt1[(*word1++)-97]++;
		AlphaCnt2[(*word2++)-97]++;
	}
	for(int i=0;i<26;i++)
	{
		if(AlphaCnt1[i] != AlphaCnt2[i])
			return false;
	}

	return true;
}

void main()
{
	//char str[]="ILOVEYOU";
	//int len = MyStrLen(str);

	//printf("len=%d\n",len);
    //printf("MyStrCmp rt=%d\n",MyStrCmp("ll",""));

	bool bFlag = IsBrotherWord("love","vole");
	printf("bFlag = %d\n",bFlag);
	getchar();
}