Post 5.1

class Board
    attr_reader :board, :no_error

    def initialize
    @board={"1"=>"1", "2"=>"2", "3"=>"3", "4"=>"4", "5"=>"5", 
     "6"=>"6", "7"=>"7", "8"=>"8", "9"=>"9"}
    end

   def human_move(answer, board, ui, new_game)
        
        if board.board[answer] !~ /\d+/
        ui.user_error
        @no_error=false
        elsif board.board[answer].include? "X" || "O" 
        ui.user_error
        @no_error=false
        else
        @no_error=true
        board.board[answer]="O"
        ui.choice
        self.display_board
        new_game.decrease_space
        end
    end
    
    def computer_move(answer, new_game)
        @board[answer]="X"
        puts "Computer chose space number #{answer}"
        self.display_board
        new_game.decrease_space
        
    end
      
    def display_board
    puts "#{@board["1"]} | #{@board["2"]} | #{@board["3"]}"
    puts "---------"
    puts "#{@board["4"]} | #{@board["5"]} | #{@board["6"]}"
    puts "---------"
    puts "#{@board["7"]} | #{@board["8"]} | #{@board["9"]}"
    end    
    
end


class ComputerPlayer
    
    attr_reader :computer_move
    
    def initialize
    @computer_move=computer_move
  end
   
  def computer_turn(board)
        move=[]
        board.board.each do |k, v|
        move << k if board.board[k]!= "X" && board.board[k]!="O"
        end
        move.map!(&:to_s)
        @computer_move=move[-1]
    end
end


class HumanPlayer
    attr_reader :human_move
    
    def initialize
    @human_move=human_move
    end

 def user_turn(ui)
    ui.user_prompt
    @human_move=gets.chomp
    end

end