67.a) Generate a string representation of a binary tree like the following. a(b(d,e),c(,f(g,)))

68.b) Generate a tree from such a string representation. Be able to handle an ill-formed string.

# # # THIS IS A STUB # # #

Example in Elm:

import Html exposing (text)
import List

f : Int -> Int
-- your implementation goes here

main = text (toString (f 0))

Result:

4

Solutions