[Java] Print out numbers of Fibonacci Sequence

Java - Print out numbers of fibonacci sequence.

In preparation for my Microsoft interview, I am going over some different ways to do the Fib sequence. Here is a simple iterative method to print out n fib numbers.

public static void main(String[] args) {
  // TODO Auto-generated method stub
  Scanner s = new Scanner(System.in);
  
  System.out.println("Enter n:" );
  int num = s.nextInt();
   int n0 = 1, n1 = 1, n2;
   System.out.print(0 + " " +n0 + " " + n1 + " ");
   for(int i = 3; i < num; i++)
   {
    n2 = n1 + n0;
    System.out.print(n2 + " ");
    n0 = n1;
    n1 = n2;

   }
   
 }

The interviewer could ask a number of questions from this point. E.x. Where might errors arise?

1. No cases defined for n=0, n=1, n=2
2. What if a non-number is given in input?
3. Negative number ?
4. What if a huge number is given in input? 99999999999?

These are all error-prone areas they will expect you to know to test.

Posted in: Interviews, Java