如何通过分隔符将数组对象分成两个(或二维数组)

2023-12-04

我想分割一个数组,如下所示。

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

Into

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,我想分割数据收入并将其呈现在一个UITableView.


不是最好的解决方案,但具有预期的结果(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"]
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