Binary Tree Class

binary_tree.rb

class BinaryTreeNode
  attr_accessor :value
  attr_reader :left, :right

  def initialize(value)
    @value = value
    @right = nil
    @left = nil
  end

  def insert_right(value)
    @right = BinaryTreeNode.new(value)
  end

  def insert_left(value)
    @left = BinaryTreeNode.new(value)
  end
end

a = BinaryTreeNode.new(5)
a.insert_left(3)
a.insert_right(9)