将字符串转换并格式化为swift中的字符数组

如何将此字符串转换为忽略前2个字符和换行符（\n）或空格的字符数组？ 所以我有这个：

var leds = """
1 1
XXX
000
00X
"""

要将此结果返回给我，请执行以下操作：

['x','x','x','0','0','0','0','0','x']

我有这个，但它不会忽略空格、换行符或第一行的编号：

let characters = Array(leds)
print(characters)

---

提前非常感谢

将字符串拆分为一个行数组，并删除第一行。然后使用

flatMap

将每一行映射到一个字符数组并连接结果

let array = leds.components(separatedBy: .newlines)
    .dropFirst()
    .flatMap(Array.init)

print(array) // ["X", "X", "X", "0", "0", "0", "0", "0", "X"]

使用

map

而不是

flatMap

可以从输入字符串中获得对应于行和列的“嵌套数组”：

let board = leds.components(separatedBy: .newlines)
    .dropFirst()
    .map(Array.init)

print(board) // [["X", "X", "X"], ["0", "0", "0"], ["0", "0", "X"]]

---

将字符串拆分为一个行数组，并删除第一行。然后使用

flatMap

将每一行映射到一个字符数组并连接结果

let array = leds.components(separatedBy: .newlines)
    .dropFirst()
    .flatMap(Array.init)

print(array) // ["X", "X", "X", "0", "0", "0", "0", "0", "X"]

使用

map

而不是

flatMap

可以从输入字符串中获得对应于行和列的“嵌套数组”：

let board = leds.components(separatedBy: .newlines)
    .dropFirst()
    .map(Array.init)

print(board) // [["X", "X", "X"], ["0", "0", "0"], ["0", "0", "X"]]

---

这也可能有用-

if let firstLine = leds.components(separatedBy: CharacterSet.newlines).first {
        let removeFirstLineStr = leds.replacingOccurrences(of: firstLine, with: "")
        let characters = String(removeFirstLineStr.filter { !" \n\t\r".contains($0) })
        print(Array(characters))
    }

或

func getCharacters() {
    guard let firstLineStr = leds.components(separatedBy: "\n").first else {
        return
    }
    let removeFirstLineStr = leds.replacingOccurrences(of: firstLineStr, with: "")
    let characters = String(removeFirstLineStr.filter { !" \n\t\r".contains($0) })
    print(Array(characters))
}

---

这也可能有用-

if let firstLine = leds.components(separatedBy: CharacterSet.newlines).first {
        let removeFirstLineStr = leds.replacingOccurrences(of: firstLine, with: "")
        let characters = String(removeFirstLineStr.filter { !" \n\t\r".contains($0) })
        print(Array(characters))
    }

或

func getCharacters() {
    guard let firstLineStr = leds.components(separatedBy: "\n").first else {
        return
    }
    let removeFirstLineStr = leds.replacingOccurrences(of: firstLineStr, with: "")
    let characters = String(removeFirstLineStr.filter { !" \n\t\r".contains($0) })
    print(Array(characters))
}

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谢谢你，谢谢你