#!/usr/bin/ruby
class NumberPicker

#Initialize the highest, lowest, and current numbers.
#upper_bound is the initial upper bound for guessing.
  def initialize(upper_bound)
    @high = upper_bound
    @low = 1
    @number = ((@high + @low) / 2).to_i
  end
  
#Pick a number based on the current number and whether it is too high, too low, or correct.
#guesses - used only for printing reasons.
  def pickNumber(guesses)
    puts "#{guesses}: Is #{@number} too high (1), too low (2), or correct (0)?"
    response = gets.to_i      
    if response == 1
        @high = @number
        @number = (@low + @number) / 2
    elsif response == 2
        @low = @number
        @number = (@high + @number) / 2
    else
        return true
    end        
    return false    
  end
  
  end