C + + generates 54 different random numbers __c++

A function that uses C + + to generate different random numbers rand () is supplemented by the Srand () function to generate 54 digits between 0~53 (54 is chosen because of the shuffle)

Algorithm one: To first define an array (which can be all 0 or the same number or no value), start by using the Srand () function to generate a random seed, using the rand () function to generate random numbers, starting with the first number into the array, each comparing to the previous i-1 If they have the same, they can be rebuilt and judged; The implementation code is as follows:

</pre><pre name= "code" class= "HTML" ><span style= "font-family:arial, Helvetica, Sans-serif;" >int Main () </span>

{
	int a[54];
	Srand ((unsigned) time (NULL));
	for (int i = 0; i < i++)
	{
		A[i] = rand ()%;
		int j = i;
		while (j--) {
			if (a[i] = = A[j])
			{
				A[i] = rand ()%;
				j = i;
			}
		}
		cout << a[i] << ';
	}
		cout << Endl;
		System ("pause");
		return 0;
}

Algorithm 2: The use of C++STL container and algorithm to first define a container to accommodate the 0~53 54 digits, stored in ascending order, and then use the Random_shuffle () function to disrupt, and then output can get 54 different random number, the implementation code as follows:

int main ()
{
	vector<int>vi;
	for (int i = 1; I <= i++) {
		vi.push_back (i);
	}
	Vector<int>::iterator it1 = Vi.begin ();
	while (it1!= vi.end ()) {
		cout << *it1<< ';
		it1++;
	}
	cout << Endl;
	Random_shuffle (Vi.begin (), Vi.end ());
	Vector<int>::iterator it2 = Vi.begin ();
	while (It2!= vi.end ()) {
		cout << *it2 << ';
		it2++;
	}
	cout << Endl;
	System ("pause");
	return 0;
}

These are two simple algorithms and implementation codes for generating random numbers