Calculating the sum of all odd array indexes

Question

I want to calculate the sum of all odd array indexes, but I\'m having some trouble finding the right way to do it.

Here\'s my code so far:

    String id         


        

Answer 1

String id = "9506265088085";
int[] intArray = new int[strArray.length];
int sum = 0;

for (int i = 1; i < id.length(); i+=2) {
        sum += Integer.parseInt(String.valueOf(id.charAt(i)));
    } 

    System.out.println(sum);