代码

void swap(register unsigned *a, register unsigned *b)
{
	unsigned t = *a; *a = *b; *b = t;
}

void sort(register unsigned *a, register const int& n)
{
	for(int i = 0; i < n; i++)
		for(int j = i + 1; j < n; j++)
			if(a[j] < a[i])
				swap(&a[i], &a[j]);
}

评测结果