APCSA/U6/runner_StudentStatsArray.java

import java.util.Scanner;

public class runner_StudentStatsArray {

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

        String choice = "";
        while (!choice.equals("n")) {
            System.out.print("Would you like to test StudentStats? (y/n): ");
            choice = scan.nextLine().trim().toLowerCase();

            if (choice.equals("y")) {
                testStudentStats(scan);
            } else if (!choice.equals("n")) {
                System.out.println("Invalid choice.");
            } else {
                System.out.println("Bye!");
            }
        }
    }

    public static void testStudentStats(Scanner scan) {
        System.out.print("Enter the length of the Student array: ");
        int len = scan.nextInt();
        scan.nextLine();

        Student[] arr = new Student[len];
        for (int i = 0; i < len; i++) {
            System.out.println(
                "\nPlease enter the info for student " + (i + 1) + ""
            );
            arr[i] = studentBuilder(scan);
        }

        System.out.print("Enter a students name to search for: ");
        String name = scan.nextLine().trim();
        System.out.print("Enter a minimum gpa to search for: ");
        double gpa = scan.nextDouble();
        scan.nextLine();

        StudentStatsArray statsArray = new StudentStatsArray(arr);
        System.out.println(statsArray);
        System.out.println("\nMethod return values: ");
        System.out.println("averageGpa(): " + statsArray.averageGpa());
        System.out.println("getGpaRange(): " + statsArray.getGpaRange());
        System.out.println("getLongestName(): " + statsArray.getLongestName());
        System.out.println("getNumFreshman(): " + statsArray.getNumFreshman());
        System.out.println("search(" + name + "): " + statsArray.search(name));
        System.out.println("search(" + gpa + "): " + statsArray.search(gpa));
        int sortStatus = statsArray.sortStatus();
        System.out.println(
            "sortStatus(): " +
                (sortStatus == 1
                    ? "Ascending"
                    : (sortStatus == -1 ? "Descending" : "Not sorted"))
        );

        System.out.println();
    }

    public static Student studentBuilder(Scanner scan) {
        System.out.print("Enter the students name: ");
        String name = scan.nextLine().trim();
        System.out.print("Enter the students gpa: (0.0-4.0) ");
        double gpa = scan.nextDouble();
        scan.nextLine();
        System.out.print("Enter the students year (1-4): ");
        int year = scan.nextInt();
        scan.nextLine();
        Student student = new Student(name, gpa, year);

        return student;
    }
}