Write a method sumArrayOdds that takes in one argument: an IntArray? called input. This method will
return the "Odd Sum", as described below.
The "Odd Sum" is the sum of the odd elements with odd indices in the array. So for example, if input =
[3, 3, 3, 4, 4], then sumArrayOdds will return 3, because the second element (index 1) is the only element
with an odd value (3) and odd index (1), so it is the only element in the sum. If input = [1, 1, 1, 1, 1],
then sumArrayOdds will return 2.
If input is null or empty, then return 0.
Remember that an array is zero-indexed, so the first element has index 0, the
second element has index 1, and so on.
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