将数组的奇数放前面偶数放后面

bool isEven(int n)
{
	return (n&1) == 0;
}
int gcd(int *a,int length)
{
	int *pbegin = a;
	int *pend = a + length -1;
	while(pbegin < pend)
	{
		if (!isEven(*pbegin))
		{
			pbegin++;
			continue;
		}
		if (isEven(*pend))
		{
			pend--;
			continue;
		}
		int temp = *pbegin;
		*pbegin = *pend;
		*pend = temp;
	}
	return 0;
}

int main()
{
	int a[10] = {2,4,9,6,1,8,4,5,6,7};
	gcd(a,10);
	for (int i  = 0;i <10;i++)
	{
		cout << a[i] <<endl;
	}
	return 0;
}