FRQ 2+3 • 241 words

Question 2

a: Iterating over a 2D array in Java is a process to iterating and most likely perfume some kind of action or check on each value. To do this you need nested arrays. An example of a 2D Array is a chess board where the pieces positions are stored in 2 dimensions.dq

b:

public class GameScoreCalculator {
    public static int calculateTotalScore(int[][] scores) {
        int totalScore = 0; 

        for (int i = 0; i < scores.length; i++) {
            for (int j = 0; j < scores[i].length; j++) {
                totalScore += scores[i][j];
            }
        }
        return totalScore;
    }
    public static void main(String[] args) { 
        int[][] scores = {
            {1, 2, 1040},
            {20, 104, 12},
            {400015, 27, 13}
        };
        int totalScore = calculateTotalScore(scores);
        System.out.println("Total: " + totalScore);
    }
}
GameScoreCalculator.main(null);

Total: 401234

Question 3

a: An array is a way to store a group of objects, and their size cannot change. It is useful to hold a group of numbers, strings, or your own objects you need to have multiple of.

b:

public class GradeCalc {
    public static double calculateAverageGrade(int[] grades) {
        int sum = 0; 
        int count = grades.length;
        
        for (int i = 0; i < grades.length; i++) { 
            sum += grades[i];
        }
        double average = (double) sum / count; 

        return average; 
    }

    public static void main(String[] args) {
        int[] studentGrades = {4, 100, 82, 71, 92};
        
        double averageGrade = calculateAverageGrade(studentGrades);
        
        System.out.println("Average Grade: " + averageGrade);
    }
}
GradeCalc.main(null);

Average Grade: 69.8