random number or array element

Build a function, random_range, that takes 2 parameters, start_num and end_num. OPTIONALLY: If start_num is an array instead (and end_num isn't specified), then it returns a random element from the array

• Example:
  • random_range(2,15)
    • returns 7
  • random_range(1,100)
    • returns 85
  • random_range(['a','b','c','d','e'])
    • returns 'b'