Question

public int Fibonacci(int x)
{        
    int prev = -1;
    int next = 1;
    for (int i = 0; i < x; i++)
    {
        int sum = prev + next;
        prev = next;
        next = sum;
        Console.WriteLine(sum); 
    }
    return sum; // plz teel me how can i return whole list ??
}

How can i return whole output of above series? i.e. if x=3 then 0 1 1 2 so how can i return it?

Answer 1

Try this:

public IEnumerable<int> Fibonacci(int x)
{
    int prev = -1;
    int next = 1;
    for (int i = 0; i < x; i++)
    {
       int sum = prev + next;
       prev = next;
       next = sum;
       yield return sum;
    }
}