Question

我有三个数组，如[“a”，“d”，“c”] [“x，p，z”] [“o，n，q”]。我想将数组合并到数组到单个数组，如[“a”，“c”，“d”，“n”，“o”，“p”，“q”，“x”，“z”]并且必须对它进行排序。

我试过这样的方式

var arr1 = ["a","x","d"]
let str2 = "byq".characters.map { String($0) } // Manually i did string to array conversion
var arr2 = Array(str2)
let str3 = "cmo".characters.map { String($0) } // Manually i did string to array conversion
var arr3 = Array(str3)

var formattedArr2: [String] = [(arr2.map{String($0)}).joined(separator: ",")]

func combineArrays<T>(arrays:[[T]]) -> [T] {
    let maxCount = arrays.reduce(0) {max($0, $1.count)}
    var result = [T]()

    for i in 0..<maxCount {
        for array in arrays {
            if i < array.count {
                result.append(array[i])
            }
        }
    }
    return result
}

print(combineArrays(arrays: [arr1,arr2,arr3]).sorted())

我的答案是["a","c","d","n","o","p","q","x","z"]。但我做错了。请任何人都可以提出将数组合并到单个数组中的数组的想法

如何合并这个数组并从[[“a”，“d”，“c”]，[“x，p，z”]，[“o，n，q”]]拆分成单个字符？

Answer 1

你在找这样的东西吗？

let sortedArray = [arr1, arr2, arr3].flatMap { $0 }.sorted()

编辑：或许这个？

let sortedArray = ([["a","d","c"],["x,p,z"],["o,n,q"]].flatMap { $0 } as [String]).flatMap { $0.split(separator: ",")}.sorted()

编辑（结果相同，但海报首选）：

let sortedArray = ([["a","d","c"],["x,p,z"],["o,n,q"]].flatMap { $0 } as [String]).flatMap { $0.components(separatedBy: ",") }.sorted()

如何在swift 3中合并和排序[[“a”，“d”，“c”]，[“x，p，z”]，[“o，n，q”]]

1 个答案: