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问题描述：有一个字符数组的内容为:"student a am i",请你将数组的内容改为"i am a student".
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代码实现：
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#include
void swap(char *a,char *b)
{
*a = *a + *b;
*b = *a - *b;
*a = *a - *b;
}
void Reverse(char *arr,int left,int right)//student a am i
{
while(left < right)
{
swap(&arr[left],&arr[right]);//arr[0]
left++;
right--;
}
}
int main()
{
int left = 0;
int right = 0;
char arr[]="student a am i";
Reverse(arr,0,sizeof(arr)/sizeof(arr[0])-2);//student\0
while(arr[right] != '\0')
{
while(arr[right] != '\0'&&arr[right] != ' ')
{
right++;
}
right--;
Reverse(arr,left,right);
left = right+2;
right = left;
}
printf("%s\n",arr);
return 0;
}
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结果是：
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