//左边奇数右边偶数
void Swap(int* a, int* b) {
	int tmp = *b;
	*b = *a;
	*a = tmp;
}
void LeftRight(int arr[],int n) {
	int i = 0;
	int j = n - 1;
	while(i<j)
	{
		if (arr[i] % 2 == 0 && arr[j] % 2 == 1) {
			Swap(&arr[i], &arr[j]);
			i++;
			j--;
		}
		else if (arr[i] % 2 == 1 && arr[j]%2== 1) {
			i++;
		}
		else if (arr[i] % 2 == 0 && arr[j]%2== 0) {
			j--;
		}
		else if (arr[i] % 2 == 1 && arr[j]%2== 0) {
			i++;
			j--;
		}
	}
}
int main()
{
	int arr[20] = { 0 };//默认最大输入长度不超过20
	int n = 0;
	printf("请输入数组长度n:");
	scanf("%d", &n);
	int i = 0;
	printf("\n请输入数组数据:");
	for (i = 0;i < n;i++)
	{
		scanf("%d", &arr[i]);
	}
	printf("\n调整后的数组为:");
	LeftRight(arr, n);
	for (i = 0;i < n;i++)
	{
		printf("%d ", arr[i]);
	}
}