Question

Public static int rfibnum(int a, int b, int n) { if(n == 1) return a; else if(n == 2) return b; else return rfibnum(a, b, n-1) rfibnum(a, b, n-2) } what are the pre-conditions for the recursive method above?

Answer 1

The pre-conditions for the recursive method are that n should be greater than 0, while a and b can be any integers. The method calculates the nth Fibonacci number using recursion.

Step-by-step explanation:

The pre-conditions for the recursive method provided in the code are:

1. The value of n must be greater than 0.
2. The values of a and b can be any integers.

The method calculates the nth Fibonacci number in the series using recursion. It checks if the value of n is 1 or 2, and if so, returns the corresponding values of a or b. Otherwise, it recursively calls itself with n-1 and n-2 as arguments until n becomes 1 or 2.