#### Average

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```package com.thealgorithms.maths;

/**
* Calculate average of a list of numbers
*/
public final class Average {
private Average() {
}

/**
* Calculate average of a list of numbers
*
* @param numbers array to store numbers
* @return mean of given numbers
*/
public static double average(double[] numbers) {
if (numbers == null || numbers.length == 0) {
throw new IllegalArgumentException("Numbers array cannot be empty or null");
}
double sum = 0;
for (double number : numbers) {
sum += number;
}
return sum / numbers.length;
}

/**
* find average value of an int array
*
* @param numbers the array contains element and the sum does not excess long
*                value limit
* @return average value
*/
public static int average(int[] numbers) {
if (numbers == null || numbers.length == 0) {
throw new IllegalArgumentException("Numbers array cannot be empty or null");
}
long sum = 0;
for (int number : numbers) {
sum += number;
}
return (int) (sum / numbers.length);
}
}
```