如何从字符串数组中提取数字？(我正在使用regex)

Question

我有一个字符串数组

test= ["ChangeServer<br/>Test: 3-7<br/>PinCode:DFSFSDFB04008<br/>ShipCode:DFADFSDFSDM-000D3<br/>SomeCode:sdfsdf", "werwerwe", "adfsdfsd", 
"sdfsdfsdfsd<br/>Test: 9<br/>PinCode:ADFSDF4NS0<br/>ShipCode:FADFSDFD-9ZM170<br/>"]

我想在Test:之后获取数字，在上面的字符串数组中是3、4、5、6、7 (范围3-7)和9。

期望输出：

["3","4","5","6","7","9"]

到目前为止我尝试过的

test.join.scan(/(?<=Test: )[0-9]+/)
=> ["3", "7"]

如何处理范围？

第二个测试用例：

    test= ["ChangeServer<br/>Test: 3-7<br/>PinCode:DFSFSDFB04008<br/>ShipCode:DFADFSDFSDM-000D3<br/>SomeCode:sdfsdf", "werwerwe", "adfsdfsd", 
"sdfsdfsdfsd<br/>Test: 9<br/>PinCode:ADFSDF4NS0<br/>ShipCode:FADFSDFD-9ZM170<br/>", "sdfsdfsdfsd<br/>Test: 15-18<br/>PinCode:ADFSDF4NS0<br/>ShipCode:FADFSDFD-9ZM170<br/>"]

期望产出：

["3","4","5","6","7","9","15","16","17","18"]

Answer 1

有很多方法可以解决这个问题。我可能会这样做：

test.flat_map do |s|
  _, m, n = *s.match(/Test:\s*(\d+)(?:-(\d+))?/)
  m ? (m..n||m).to_a : []
end

在repl.it：https://repl.it/JFwT/13上看到它的作用

或者，更简洁地说：

test.flat_map {|s| s.match(/Test:\s*(\d+)(?:-(\d+))?/) { $1..($2||$1) }.to_a }

https://repl.it/JFwT/11

Answer 2

只是出于好奇：

test.
  join.
  scan(/(?<=Test: )[\d-]+/).
  map { |e| e.gsub(/\A\d+\Z/) { |m| "#{m}..#{m}" }.gsub('-', '..') }.
  map(&method(:eval)).
  flat_map(&:to_a)