字符串逆置

方法一：

void Reverse(char *src)

{

       char *des = NULL;

       int len = strlen(src);

       des = (char *)malloc((len+1)*sizeof(char));

       if (des == NULL)

       {

              exit(-1);

       }

 

       char *d = des;

       char *s = &src[len-1];

       while (len-- != 0)

       {

              *d++ = *s--;

       }

       *d = '\0';

       cout<

       cout<

       free(des);

}

 

方法二：在字符串自身上操作，不引入其他的变量

void Reverse(char *src)

{

       int len = strlen(src);

       char tmp;

       for (int i = 0; i < len/2; i++)

       {

              tmp = src[i];

              src[i] = src[len - 1 - i];

              src[len - 1 - i] = tmp;

       }

       cout<

}

 

方法三：递归方法

void Reverse(char *src)

{

       if (*src == '\0')

              return;

       Reverse(src+1);     

       printf("%c", *src);

}