08. Academy Graduation

package Lekciq;


import java.util.*;
import java.util.stream.Collectors;
import java.util.stream.IntStream;

public class AcademyGraduation {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);


        Scanner scan = new Scanner(System.in); // Create a Scanner object for input
        int numberOfStudents = Integer.parseInt(scan.nextLine()); // Read the number of students

        // Create a TreeMap to store student names and their grades
        Map<String, List<Double>> graduationList = new TreeMap<>();

        // Iterate over each student
        IntStream.range(0, numberOfStudents)
                .mapToObj(i -> scan.nextLine())
                .forEach(name -> {
                    // Read the name of the student
                    String studentName = name;

                    // Read the grades for the student and convert them to doubles
                    List<Double> grades = Arrays.stream(scan.nextLine().split("\\s+"))
                            .map(Double::parseDouble)
                            .collect(Collectors.toList());

                    // Store the student name and their grades in the graduationList
                    graduationList.put(studentName, grades);
                });

        // Iterate over the graduationList and print each student's name and their average grade
        graduationList.forEach((name, grades) -> {
            System.out.printf("%s is graduated with %s%n", name, getAverage(grades));
        });
    }

    // Method to calculate the average grade for a list of grades
    private static Double getAverage(List<Double> grades) {
        double sum = 0.0;
        // Calculate the sum of grades
        for (Double grade : grades) {
            sum += grade;
        }
        // Calculate and return the average grade
        return sum / grades.size();
    }
}