Fibonacci Series in cody Challenge

I am solving Fibonacci series in Cody challenge. I have written the following code and it is running well in MATLAB editor. here is the code

function f = fib(n)

    if (n>2)

      f(1)=1;

      f(2)=1;

      for i=3:n

      f(i)=f(i-1)+f(i-2);

      end
  elseif n==2

         f(1)=1;

         f(2)=1;
  elseif (n==1)

      f(1)=1;
  else

      disp('invalid input')
  end
  end

However when I am submitting it in cody incorrect answer is displayed. Can anyone suggest it why this one is running in editor and wrong when submitted?

[Kaitlyn Keil]

I'm not positive since the original question isn't displayed, but if this is the question:

Calculate the nth Fibonacci number.

Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ...

then it might be that you are doing too much, and they only want the final number, not all of the proceeding ones. Try just returning the last one maybe?

[NAVNEET NAYAN]

Yes, you are right. They wanted only last number. I was trying too much.

Thanks