I changed the interface to what I think it's more 'Ruby'. If you are looking for in-place solution, we should use the ! to indicate it's more 'dangerous' than t

I changed the interface to what I think it's more 'Ruby'. If you are looking for in-place solution, we should use the ! to indicate it's more 'dangerous' than the other solution which returns a new copy. I'm new to Ruby so I'd love to hear feedback from other more experienced Rubyists on HN. (And I couldn't find reverse_each_with_index so I had to write my own.) https://github.com/tpun/add1/blob/master/add1.rb https://github.com/tpun/add1/blob/master/add1.rb