Hyper-Heuristic - What is an example of a heuristic and a metaheuristic?

Metaheuristics are techniques that are independent of the problem and can be used across a wide range of issues. For instance, in Quicksort, a heuristic could be selecting a random element for pivoting. A metaheuristic, on the other hand, is oblivious to the problem it will be applied to, and can treat functions as black boxes.