printseries.rb

=begin
* Method should accept two parameters. First parameter is first number to display, second parameter should be number of rows to be printed.
* Any programming language is fine.
* Sample: printseries(7,4)
* Output should be:
* 7
* 14 15
* 28 29 30 31
* 56 57 58 59 60 61 62 63
=end

class PrintSeries
    tp = TracePoint.new(:line, :call, :return) do |tp|
      p tp
    end
   # tp.enable
  def ps(firstnum,rownum)
    i = 0
         current_row = 0
           while current_row < rownum
             if i == 0
                print firstnum 
                 i += 1
               else
                 i = i * 2
                 temp = firstnum * i
                 print temp
                    j = 0 
                  while j < (i-1) 
                          temp = temp + 1
                          print " #{temp}"
                          j += 1
                    end  #inner while close   
                end # if close
               puts ""
               current_row += 1
        end # main while close 
        tp.disable   
  end #ps close
end #class close
ob = PrintSeries.new
puts "Enter First Number : \t" 
firstnum = gets.to_i 
puts "Enter Row Number : \t"
rownum = gets.to_i
puts "Pascal double series is \n"
puts ob.ps(firstnum,rownum)
puts "Have a nice time..........!!!"