Question

Write a three parameter generic function that will average the numbers selected from a list but only those between low and high, inclusive.   That is, this is a three parameter function, with list,

low, and high cutoff values. Be careful, the average depends only on the selected numbers.

B. Test your function with the salesRevenue list and having a low = 30 and high = 100. Your function should return the average of those numbers. Print this out, properly identified.

   salesRevenue = [ 20, 30, 35, 15, 80, 100]

Answer 1

public class Main {

public static <T extends Comparable<T>> double average(T arr[], T low, T high) {

double sum = 0;

int count = 0;

for (int i=0; i<arr.length; i++) {

if (low.compareTo(arr[i]) <= 0 && high.compareTo(arr[i]) >= 0) {

sum = sum + (int)arr[i];

count ++;

}

}

return sum / (double)(count);

}

public static void main(String[] args) {

Integer salesRevenue[] = {20, 30, 35, 15, 80, 100};

System.out.println(average(salesRevenue, 30, 100));

}

}