input: Write a python function to convert CamelCase to camel/case.
  assert camelcase_to_slash("CamelCaseToSlash") == "camel/case/to/slash"
  assert camelcase_to_slash("SimpleTest") == "simple/test"
  assert camelcase_to_slash("HTTPRequest") == "h/t/t/p/request"
output: def camelcase_to_slash(s):
      result = []
      for char in s:
          if char.isupper():
              if result:
                  result.append('/')
              result.append(char.lower())
          else:
              result.append(char)
      return ''.join(result)