Generate “In-Range” Random Numbers in C

Question

I need to generated random numbers in the range [0, 10] such that:

• All numbers occur once.
• No repeated results are achieved.

Can someone pl

Answer 1

Try out this algorithm for pseudo-random numbers:

int values[11] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
srand(time(NULL));

for (int i = 0; i < 11; i++)
{
    int swap1idx = rand() % 11;
    int swap2idx = rand() % 11;

    int tmp = values[swap1idx];
    values[swap1idx] = values[swap2idx];
    values[swap2idx] = tmp;
}

// now you can iterate through the shuffled values array.

Note that this is subject to a modulo bias, but it should work for what you need.