从数组保存到另一个数组- Swift 3

let originalArray = [1, 2, 3, 4, 5]
var newArray = [Int]()

for element in originalArray {
    newArray.append(element)
}

print(newArray) // 输出: [1, 2, 3, 4, 5]

let originalArray = [1, 2, 3, 4, 5]
let newArray = originalArray + []

print(newArray) // 输出: [1, 2, 3, 4, 5]

let originalArray = [1, 2, 3, 4, 5]
let newArray = Array(originalArray)

print(newArray) // 输出: [1, 2, 3, 4, 5]

let originalArray = [1, 2, 3, 4, 5]
let newArray = Array(arrayLiteral: originalArray)

print(newArray) // 输出: [[1, 2, 3, 4, 5]]