# problem link - https://codingbat.com/prob/p192589
# Given an array of ints, return the sum of the first 2 elements in the array. If the array length is less than 2, just sum up the elements that exist, returning 0 if the array is length 0.
#
#
# sum2([1, 2, 3]) → 3
# sum2([1, 1]) → 2
# sum2([1, 1, 1, 1]) → 2

def sum2(nums):
  if len(nums) > 1:
    return nums[0] + nums[1]
  elif len(nums)==0:
    return 0
  return nums[0]

sum2([1, 1, 1, 1])