public class Solution {
    public Integer last(int[] numbers) {
        // Escribe tu solución aquí
        int lastNumber = 0;
        for(int i = 0; i < numbers.length; i++){
            if(i == numbers.length -1){
                lastNumber = numbers[i];
            }
        }
        return numbers.length > 0 ? lastNumber : null;
    }
}