ruby-on-rails - Ruby RoR 解析字符串上层

Question

我是 ruby​​ 的新手，我想解析这个字符串中的每个字符，例如 str = "Amdh#34HB!x" 并得到这样的结果:

1) 成字符串

"Upper : 3 Lower : 4 numbers : 2 special : 2"

2) 将结果存入变量

@Upper = 3
@Lower = 4
@numbers = 2
@special = 2

有什么帮助吗？

Answer 1

s = 'Amdh#34HB!x'

upper = s.scan(/[A-Z]/).count
lower = s.scan(/[a-z]/).count
numbers = s.scan(/[0-9]/).count
special = s.scan(/[^a-z0-9]/i).count

"Upper: #{upper} Lower: #{lower} Numbers: #{numbers} Special: #{special}"

#=> "Upper: 3 Lower: 4 Numbers: 2 Special: 2"