Ios 在Swift中,有没有办法在句子中随机大写字母?
我只是想要一种随机将句子中的字母大写的方法。可能吗?试试这个Ios 在Swift中,有没有办法在句子中随机大写字母?,ios,swift,xcode,string,Ios,Swift,Xcode,String,我只是想要一种随机将句子中的字母大写的方法。可能吗?试试这个 var string: String = "your string" var chars: [Any] = [] var letterIndexes: [Any] = [] for i in 0..<string.characters.count { var ch: unichar = string[i] // add each char as a string to a chars collection
var string: String = "your string"
var chars: [Any] = []
var letterIndexes: [Any] = []
for i in 0..<string.characters.count {
var ch: unichar = string[i]
// add each char as a string to a chars collection
chars.append("\(ch)")
// record the index of letters
if CharacterSet.letters.characterIsMember(ch) {
letterIndexes.append((i))
}
}
参考。您是否参考了此SO链接?非常感谢,但我无法阅读objective-c代码(我是初学者),因此我正在为swift添加代码。
var charsToUppercase: Int = 12
var i = 0
while i < charsToUppercase && letterIndexes.count {
var randomLetterIndex: Int? = arc4random_uniform(((letterIndexes.count) as? u_int32_t))
var indexToUpdate = CInt(letterIndexes[randomLetterIndex])
letterIndexes.remove(at: randomLetterIndex)
chars[indexToUpdate] = chars[indexToUpdate].uppercased()
i += 1
}
var result: String = (chars as NSArray).componentsJoined(byString: "")
print("\(result)")