input: Write a function to sort a list of strings alphabetically. If the input list is empty, return an empty list.
  def sortAlphabetically(strings):
      if not strings:
          return []
      strings.sort()
      return strings
  
  assert sortAlphabetically(["hello", "world", "good", "morning", "programming"])==["good", "hello", "morning", "programming", "world"]
  assert sortAlphabetically(["zebra", "apple", "banana", "orange"])==["apple", "banana", "orange", "zebra"]
  assert sortAlphabetically([])==[]
output: def sortAlphabetically(strings):
      if not strings:
          return []
      strings.sort()
      return strings