Ruby String merge

Question

我想在Ruby 1.8.7中合併字符串，請大家幫忙。

s1 = "abc(1,,,,)" 
s2 = "abc(,,3,,)" 
s3 = "abc(,2,,,)" 
s4 = "abc(,,,,5)" 

和輸出應該是：

s = "abc(1,2,3,,5)" 

是否有紅寶石1.8.7提供任何內置的功能來實現這一目標？

Answer 1

也許這樣的事情？可能不夠通用...

def merge *strings 
    result_array = strings.inject([]) do |merged_array,string| 
     string_content = string[/\((.+?)\)/, 1].split(',', -1) 
     string_content.each_with_index do |elem,idx| 
      if !merged_array[idx] || merged_array[idx].empty? 
       merged_array[idx] = elem 
      end 
     end 

     merged_array 
    end 

    $` + '(' + result_array.join(',') + ')' + $' 
end 

p merge(s1, s2, s3, s4) #=> "abc(1,2,3,,5)"