import java.util.Scanner;

public class AverageCalculator {

public static double findAverage(double ...numbers) { //varargs - accept variable number of arguments

if (numbers.length == 0) {

throw new IllegalArgumentException("At least one number is required");

}

double sum = 0;

for (double num : numbers) {

sum += num;

}

return sum / numbers.length;

}

public static void main(String[] args) {

Scanner s = new Scanner(System.in);

System.out.print("Enter the number of values: ");

int n = s.nextInt();

double[] numbers = new double[n];

System.out.println("Enter " + n + " numbers:");

for (int i = 0; i < n; i++) {

numbers[i] = s.nextDouble();

}

double avg = findAverage(numbers);

System.out.println("Average: " + avg);

}

}