Please complete in Java: Copy-paste option

You are given a list of students names and their test scores. Design an algorithm that does the following:

Calculates the average thest scores.

Determines and prints the names of all the students whose test score is below the average test score.

Determines the highest test score.

Prints the names of all the students whose texts score is the same as the highest test score. (You must divide this problem into subproblems as follows: The first subproblem determines the average test score. The second subproblem determines and prints the names of all the students whose test score is below the average test score. The third subproblem determines the highest test score. The fourth subproblem prints the names of all the students whose test score is the same as the highest test score. The main algorithum combines the solutions of the subproblems.)

Needs to be completed in Java