99 Elm Problems/Problem 87

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Output a depth-first order graph traversal of a graph given the starting node. The output should be a list of nodes that are reachable from the starting point and sorted in depth-first order.

# # # 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))