题解 | #斐波那契数列#

function Fibonacci(n) {
    if (n < 1 || n > 40) {
        return false;
    }
    let first = 1;
    let second = 1;
    let result = 0;
    if (n === 1 || n === 2) {
        return 1;
    } else {
        while (n > 2) {
            result = first + second;
            first = second;
            second = result;
            n--;
        }
        return result;
    }
}
module.exports = {
    Fibonacci: Fibonacci,
};