gistfile1.txt

public static int nameThis(int nthNumber) {
        int previouspreviousNumber, previousNumber = 0, currentNumber = 1;

        for (int i = 1; i < nthNumber; i++) {
            previouspreviousNumber = previousNumber;
            previousNumber = currentNumber;
            currentNumber = previouspreviousNumber + previousNumber;
        }
        return currentNumber;
    }