pankajsisodiya.rb

class Polynomial
  def initialize(*num)
     @expression = ""
     @howmanynumbers = 0
     num.each{@howmanynumbers = @howmanynumbers + 1}
        
     num.each{|n| @howmanynumbers = @howmanynumbers -1; if n ==1 then @expression =  @expression + " + "+ "x^" + @howmanynumbers.to_s elsif n < 0 then @expression =  @expression + " - " + (n*-1).to_s + "x^" + @howmanynumbers.to_s elsif n==0 then @expression = @expression else @expression = @expression + " + " + n.to_s + "x^" + @howmanynumbers.to_s end } 
     @expression.sub!('x^0', '')
     
     @counter = -1
     @finalexpression = ""
     @expression.scan(/./) {|ch| @counter = @counter + 1; if ch == "+" && @counter == 0 then @finalexpression = @finalexpression; @counter = 1 else @finalexpression = @finalexpression + ch.to_s end }
     
     puts @finalexpression
      
    end
end
 
series = Polynomial.new(-3,1,1,0,6)