Java Array Exercises: Calculate the average value of array elements
Java Array: Exercise-4 with Solution
Write a Java program to calculate the average value of array elements.
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Sample Solution:
Java Code:
public class Exercise4 {
public static void main(String[] args) {
int[] numbers = new int[]{20, 30, 25, 35, -16, 60, -100};
//calculate sum of all array elements
int sum = 0;
for(int i=0; i < numbers.length ; i++)
sum = sum + numbers[i];
//calculate average value
double average = sum / numbers.length;
System.out.println("Average value of the array elements is : " + average);
}
}
Sample Output:
Average value of the array elements is : 7.0
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Java: Tips of the Day
countOccurrences
Counts the occurrences of a value in an array.
Use Arrays.stream().filter().count() to count total number of values that equals the specified value.
public static long countOccurrences(int[] numbers, int value) { return Arrays.stream(numbers) .filter(number -> number == value) .count(); }
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