ios - swift : How to sort alphabetically but with letters first

Question

我有一个 Realm 结果列表:

subsList = RealmDB.objects(Downloads).filter("isActive = true").sorted("name", ascending: true)

它显示排序的结果，但第一个结果是“(item 1)”或 1-item，然后是 A-item、B-item 等...

我如何以 A 项、B 项等先行(第 1 项)、第 1 项显示在最后的方式对其进行排序？

注意:对于那些不了解realm的人，可以使用NSPredicate进行排序

谢谢大家

编辑: 根据评论，我得到了

-chloro
(+-)-1,2,3-octa
(amino)
1-propanol
acetone
benzin
dinoterb
TNT

我需要

acetone
benzin
dinoterb
TNT
-chloro
(+-)-1,2,3-octa
(amino)
1-propanol

Answer 1

这只是一个示例，请修复代码以使其看起来更好。

var arr = ["-chloro", "(+-)-1,2,3-octa", "(amino)", "1-propanol", "acetone", "benzin","dinoterb","TNT"]

func matches(for regex: String, in text: String) -> [String] {

    do {
        let regex = try NSRegularExpression(pattern: regex)
        let nsString = text as NSString
        let results = regex.matches(in: text, range: NSRange(location: 0,     length: nsString.length))
        return results.map { nsString.substring(with: $0.range)}
    } catch let error {
        print("invalid regex: \(error.localizedDescription)")
        return []
    }
}


arr.sort { (s1, s2) -> Bool in
    let matched = matches(for: "[0-9,\\(,\\-]", in: s1)
    let matched2 = matches(for: "[0-9\\(,\\-]", in: s2)
    if matched.isEmpty && matched2.isEmpty {
        return s1.lowercased() < s2.lowercased()
    } else if matched.isEmpty && !matched2.isEmpty {
        return true
    } else if !matched.isEmpty && matched2.isEmpty {
        return false
    } else {
        return matched.first! < matched2.first!
    }
}

结果 -> ["丙酮", "苯甲酸", "dinoterb", "TNT", "(+-)-1,2,3-octa", "(氨基)", "-氯", "1-丙醇"]