Java Program Fibonacci Sequence

Question

I am writing a \"simple\" program to determine the Nth number in the Fibonacci sequence. Ex: the 7th number in the sequence is: 13. I have finished writing the program, it

Answer 1

Too slow...

Better: (JavaScript example)

function fibonacci(n) {
    var a = 0, b = 1;

    for (var i = 0; i < n; i++) {
        a += b;
        b = a - b;
    }
    return a;
}