arrays - 如何通过分隔符将数组对象拆分为两个(或二维数组)

Question

我想拆分一个数组，如下所示。

let arrayToSplit = ["Europe|#|France|#|Paris", "Europe|#|Italy|#|Rome", "America|#|USA|#|Washington", "America|#|Canada|#|Ottawa"]

进入

let firstArray = ["Europe", "Europe", "America", "America"]
let secondArray = ["France", "Italy", "USA", "Canada"]
let thirdArray = ["Paris", "Rome", "Washington", "Ottawa"]

通过分成这三个数组，我想将数据收入拆分并呈现在UITableView中。

Answer 1

不是最好的解决方案，但有预期的结果(提示在代码注释中):

let arrayToSplit = ["Europe|#|France|#|Paris", "Europe|#|Italy|#|Rome", "America|#|USA|#|Washington", "America|#|Canada|#|Ottawa"]
var firstArray = [String]()
var secondArray = [String]()
var thirdArray = [String]()

for element in arrayToSplit {

    // new array with substrings divided by "|#|" e.g. ["Europe", "Europe", "America", "America"]
    let newArray = element.componentsSeparatedByString("|#|")
    firstArray.append(newArray[0])
    secondArray.append(newArray[1])
    thirdArray.append(newArray[2])
}

print("first array: \(firstArray)") // first array: ["Europe", "Europe", "America", "America"]
print("second array: \(secondArray)") // second array: ["France", "Italy", "USA", "Canada"]
print("third array: \(thirdArray)") // third array: ["Paris", "Rome", "Washington", "Ottawa"]