如何在 Swift 中将数组转换并加入字符串

Question

我有：

让数组 = ["a", "1", "b"]

预期结果：

让结果=“a1b”

Answer 1

[字符] -> 字符串：

let characterArray: [Character] = ["a", "1", "b"]

let string = String(characterArray)

print(string)
// prints "a1b"

[字符串] -> 字符串：

let string = stringArray.joined(separator: " ")

print(string)
// prints "a1b"