如何在Swift 2.0中將數組的元素添加到單個數組中？

Question

我有以下陣列：

var array1 = [[aruna,bala,chitra], [marya,navya,ovya], [jaya,kala,latha], [stella,taruna,unna]] 
var array2 = [] 

我怎麼可以添加和刪除陣列1值的元素到數組2剛剛元素，而不是數組。 像這樣：

，如果我想要添加2 and 4陣列，

array2 = [marya,navya,ovya,stella,taruna,unna] //Expected Output 

，如果我想刪除2陣列

array2 = [stella,taruna,unna] //Expected Output 

我不能使用append像array2.append(array1[[1]])增加2數組錯誤說：

Cannot subscript a value of type [NSArray] with the index of type [int]這是完整的沒錯。

Answer 1

我們假設這些都是Ints。爲簡單起見，我將用實際的數字文字：

var array1 = [[1,2,3], [4,5,6], [7,8,9], [10,11,12]] 
var array2 = array1[1] + array1[3] // [4,5,6,10,11,12] 

另一種方式：

var array1 = [[1,2,3], [4,5,6], [7,8,9], [10,11,12]] 
var array2 = [Int]() 
array2 += array1[1] 
array2 += array1[3] // [4,5,6,10,11,12] 

另一種方式：

var array1 = [[1,2,3], [4,5,6], [7,8,9], [10,11,12]] 
var array2 = Array([array1[1], array1[3]].flatten()) // [4,5,6,10,11,12] 

編輯好了，你已經改變了你的代碼。但答案是一樣的：

let aruna = "aruna" 
let bala = "bala" 
let chitra = "chitra" 
let marya = "marya" 
let navya = "navya" 
let ovya = "ovya" 
let jaya = "jaya" 
let kala = "kala" 
let latha = "latha" 
let stella = "stella" 
let taruna = "taruna" 
let unna = "unna" 

var array1 = [[aruna,bala,chitra], [marya,navya,ovya], [jaya,kala,latha], [stella,taruna,unna]] 

var array2 = Array([array1[1], array1[3]].flatten()) 
// ["marya", "navya", "ovya", "stella", "taruna", "unna"]