Memoization

Memoization is an optimization technique used primarily to speed up computer programs by storing the results of expensive function calls and returning the cached result when the same inputs occur again

In other words, Memoization is a way for a function to remember or cache the results. Given an expensive function that takes a long time to compute for the same results, create a memorization function that can cache results and outputs them with no time at all.

Task

• Create a memo function that takes in a function and computes it. If the parameters are same and you already have the results in your cache, return the memoized results.
• Use the given Product function to mimic an expensive function calculation.