input: Write a python function to find the sum of odd numbers in an array.
  assert findOddSums([2, 4, 5, 6]) == 5
  assert findOddSums([1, 3, 5, 7]) == 16
  assert findOddSums([10, 12, 14, 15]) == 15
output: def findOddSums(arr):
      return sum(x for x in arr if x % 2 != 0)