4. Consider the following recursive algorithm. Algorithm Mystery A[0..n-1]) //Input: An array A[0..n - 1] of real numbers if n = 1 return A[0] else temp← Riddle(A[0..n - 2]) if temp ≤ A[n 1] return temp else return A[n - 1] - a. What does this algorithm compute? b. What is its input size? c. What is its basic operation?

The computation systems can be defined as the systems that are capable of solving a problem that includes calculations either mathematical or logical, and are able to produce the result as an output. For example, a simple calculator that is given a set o…