👉 In computer science, a prefilter is a type of filter that operates on data before it is used in an algorithm. It is typically used to remove unnecessary information or duplicates from a dataset. A prefilter can be defined as a function that takes an input data point and returns the filtered output. The function must return true if the input is not part of the filtered output, and false otherwise. For example, consider a scenario where you have a list of students and their grades. You might want
