Example: Program to Calculate Average Using Arrays
public class Average {
public static void main(String[] args) {
double[] numArray = { 45.3, 67.5, -45.6, 20.34, 33.0, 45.6 };
double sum = 0.0;
for (double num: numArray) {
sum += num;
}
double average = sum / numArray.length;
System.out.format("The average is: %.2f", average);
}
}
Output
The average is: 27.69
In the above program, the numArray stores the floating-point values whose average is to be found.
Then, to calculate the average, we need to first calculate the sum of all elements in the array. This is done using a for-each loop in Java.
Finally, we calculate the average by the formula:
average = sum of numbers / total count
In this case, the total count is given by numArray.length.
Finally, we print the average using format() function so that we limit the decimal points to only 2 using "%.2f"