斐波拉契数列fn = f(n-1) + f(n-2) 其中 n 是正整数,且 n 大于等于 2代码示例:1234567891011121314151617181920public class TestFibonacci { public static void main(String[] args) { int result = fibonacci(8); System.out.println(result); } public static int fibonacci(int index){ if(index >= 0){ if(index == 0){ return 0; }else if(index ==1){ return 1; }else{ return fibonacci(index -1) +fibonacci(index -2); } }else{ System.out.println("请你重新输入"); return -1; } }}