public class Solution {
    public int contarEnRango(int[] numbers, int min, int max) {
    if (numbers == null || numbers.length == 0) {
            return 0;
        }

        int result = 0;

        for (int number : numbers) {
            if (min <= number && number <= max) {
                result++;
            }
        }

        return result;
    }
}