c# - 我怎样才能退回斐波那契数列？我应该使用 IList<> 吗？

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 ??
}

如何返回上述系列的全部输出？即如果 x=3 那么 0 1 1 2 那么我该如何返回它呢？

Answer 1

试试这个:

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;
    }
}