aashishchittimilla.rb

class Polynomial
  def Polynomial.new(args)
    @expression = ""
    raise ArgumentError, 'Need at least 2 coefficients.' unless args.length > 2
    for i in 1..args.length

      if (args[i-1].<=>0) == 1  && i > 1
        @expression = @expression  + "+"
      end
      if (args[i-1].<=> 0) == 0
        next
      end
      if  args.length-i == 0
        @expression = @expression  + "#{args[i-1]}"
      elsif args[i-1] == 1
        @expression = @expression  + "x^" + "#{args.length-i}"
      else
        @expression = @expression  + "#{args[i-1]}" + "x^" + "#{args.length-i}"
      end
    end
    @expression
    
  end
end
#y = Polynomial.new([-3,-4,1,0,6]) # => -3x^4-4x^3+x^2+6
#puts y

#puts Polynomial.new([1,0,2]) # => x^2+2
#puts Polynomial.new([1]) # =>  Need at least 2 coefficients. (ArgumentError)

       #  from D:/aashishkiran.rb:35