ios - Swift 数组中的数组

Question

我有一个包含 13 个项目的数组，如下所示。

var data =[“MonthFolder/", 
"MonthFolder/January", 
"MonthFolder/February",
"MonthFolder/March",
"DayFolder/",
"DayFolder/Monday",
"DayFolder/Tuesday",
"DayFolder/Wednesday",
"DayFolder/Thursday",
"YearFolder/",
"YearFolder/2016",
"YearFolder/2015",
"YearFolder/2014"]

我正在尝试打印最终结果如下的数组

[("MonthFolder/January","MonthFolder/February","MonthFolder/March"), 
("DayFolder/Monday","DayFolder/Tuesday","DayFolder/Wednesday","DayFolder/Thursday"),
("YearFolder/2016", "YearFolder/2015”, "YearFolder/2014")]”

我已经做到了

var fileName  = [AnyObject]()
var allFiles = [AnyObject]()

for item in data{

    let keyString = item.characters.last

    if keyString != "/"{
        fileName.append(item)
    }
    else if keyString == "/"{
        if fileName.count > 0{
            allFiles.append(fileName)
            fileName = []
        }
    }
}

并得到输出

[("MonthFolder/January","MonthFolder/February","MonthFolder/March"), 
("DayFolder/Monday","DayFolder/Tuesday","DayFolder/Wednesday","DayFolder/Thursday”)]

缺少 allFiles 中的第三个对象，因为最后一次迭代的 else if 条件失败。我如何实现我想要的输出？谢谢。

Answer 1

通过这种方式你将得到预期的输出:

var fileName  = [AnyObject]()
var allFiles = [AnyObject]()

for item in data{

  let keyString = item.characters.last

  if keyString != "/"{
    fileName.append(item)
  }
  else if keyString == "/"{
    if fileName.count > 0{
        allFiles.append(fileName)
        fileName = []
    }
  }
}
if fileName.count != 0 {
  allFiles.append(fileName)
  fileName = []
}

希望这对你有帮助:)