我正在使用一个UILabel和一个UITextField，我想转换成3个字母组的所有文本

func convertToThreeLetterGroups(text: String) -> [String] {
    var groups: [String] = []
    
    let textWithoutSpaces = text.replacingOccurrences(of: " ", with: "")
    let textLength = textWithoutSpaces.count
    
    for i in 0..<(textLength-2) {
        let startIndex = textWithoutSpaces.index(textWithoutSpaces.startIndex, offsetBy: i)
        let endIndex = textWithoutSpaces.index(startIndex, offsetBy: 2)
        let group = String(textWithoutSpaces[startIndex...endIndex])
        groups.append(group)
    }
    
    return groups
}