input: Write a function to sort a list of strings alphabetically using python script. If the input is an empty list, the function should return an empty list.
  
  
  assert sort_strings(["Hello", "Yes", "No", "World"])==["Hello", "No", "World", "Yes"]
  assert sort_strings(["apple", "banana", "cucumber"])==["apple", "banana", "cucumber"]
  assert sort_strings([])==[]
  
output: def sort_strings(lst):
      return sorted(lst)