Ruby program to reverse a number

Write a Ruby program to reverse a number


class ReverseNumber
  def checkReverse
     print "Enter the number: "
     input_num = gets.chomp.to_i
     num = input_num
     new_num = 0 
     while num > 0 do
       rem = num % 10 
       num = num / 10 
       new_num = (new_num * 10) + rem 
     end
      print "Reverse of #{input_num} is #{new_num}"
  end
end

p = ReverseNumber.new
p.checkReverse

----------------------------------------------------------------------------

class ReverseNumber
  def doReverse
    print "Enter the number: "
    num = gets.chomp
    rev = num.reverse.to_i
    print "Reverse of number is #{rev}"
  end
end

p = ReverseNumber.new 
p.doReverse

Output:

Enter the number:  852
Reverse of number is 258