Java:thinging in java p153 exercise 9

import java.util.Scanner;

public class Fibonacci {

    int fibo(int n) {
        switch (n) {
        case 1:
            return 1;
        case 2:
            return 1;
        default:
            return fibo(n - 1) + fibo(n - 2);
        }
    }

    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();

        Fibonacci f = new Fibonacci();

        for (int i = 0; i < n; i++) {
            System.out.println(f.fibo(i + 1));
        }
    }
}

输出

5
1
1
2
3
5