Q:

Extract values from string in swift

I have a string as shown below and i am trying to separate each part (,) into an array.  
let stringArr = remainderString.componentsSeparatedByString(",")

0lY6P5Ur90TAQnnnI6wtnb,#29,Projekt-FZK-Haus,Projekt FZK-House create
  by KHH Forschuungszentrum Karlsruhe,$,$,$,(#67,#229,#275),#42

Results
["0lY6P5Ur90TAQnnnI6wtnb", "#29", "Projekt-FZK-Haus", "Projekt FZK-House create by KHH Forschuungszentrum Karlsruhe", "$", "$", "$", "(#67", "#229", "#275)", "#42"]

If you notice, the part (#67,#229,#275) were separated into "(#67", "#229", "#275)"
I want to insert those values inside the (braces) into an another array.  So my question is, how can I locate the opening ( and then the closing ) ? 

A:

Another example.  Using UTF-16 based index and range properly, so works with Strings including non-BMP characters. 
let str = "0lY6P5Ur90TAQnnnI6wtnb,#29,Projekt-FZK-Haus,Projekt FZK-House create by KHH Forschuungszentrum Karlsruhe,$,$,$,(#67,#229,#275),#42"
let pattern = "(\\([^\\)]*\\)|[^\\(,][^,]*)(?:,|$)"
let regex = try!  NSRegularExpression(pattern: pattern, options: [])
let matches = regex.matchesInString(str, options: [], range: NSRange(0..<str.utf16.count))
let stringArr = matches.map{match->String in
    let matchingRange = match.rangeAtIndex(1)
    let matchingString = (str as NSString).substringWithRange(matchingRange) as String
    return matchingString
}
print(stringArr) //->["0lY6P5Ur90TAQnnnI6wtnb", "#29", "Projekt-FZK-Haus", "Projekt FZK-House create by KHH Forschuungszentrum Karlsruhe", "$", "$", "$", "(#67,#229,#275)", "#42"]

