examples/rosettacode/visualize_a_tree.nit

   1 #!/usr/bin/env nit
   2 #
   3 # This file is part of NIT ( http://www.nitlanguage.org ).
   4 # This program is public domain
   5
   6 # Task: Visualize a tree
   7 # SEE: <http://rosettacode.org/wiki/Visualize a tree>
   8 module visualize_a_tree
   9
  10 # The library `ordered_tree` offers basic visualization services for trees.
  11 import ordered_tree
  12
  13 var tree = new OrderedTree[String]
  14 tree.add(null, "a")
  15 tree.add("a", "ab")
  16 tree.add("ab", "abc")
  17 tree.add("a", "ac")
  18 tree.add("ac", "acd")
  19 tree.add(null, "b")
  20 tree.add("b", "bc")
  21
  22 tree.write_to(stdout)