Exercises

Add new methods to the GameRepository class that we created in this chapter. Make sure you create a new method to solve each algorithm and that you use a functional programming approach:

• Retrieve all the games whose average score is lower than a maximum average score received as an argument.
• Generate a string with the first letter of each game name followed by the highest score value. Use a hyphen as a separator for each game name and highest score value pair. That last value pair shouldn't include a hyphen after it.
• Calculate the minimum playedCount value.
• Calculate the maximum playedCount value.