Simple program written in Java to calculate n-th element of fibonacci squence.
import java.util.Scanner; // ? 2017 TheFlyingKeyboard // theflyingkeyboard.net public class Fibonacci { public static void main(String []args) { Scanner reader = new Scanner(System.in); int n; System.out.println("Enter a number: "); n = reader.nextInt(); //Reads integer from keyboard System.out.println("Fibonacci of: " + n + " is equal to: " + fibonacci(n)); } public static int fibonacci(int n){ int fib = 0; int fibPrev1 = 1; int fibPrev2 = 0; for(int i = 2; i <= n; i++){ fib = fibPrev1 + fibPrev2; fibPrev2 = fibPrev1; fibPrev1 = fib; } return fib; } }