［已解决］swift把字符串分割为字符数组

swift中想要把字符串分割为字符数组

搜：

//split string into character array
func splitSingleStrToCharArr(strToSplit:String) -> [Character] {
    print("strToSplit=\(strToSplit)") //strToSplit=周杰伦

    let splitedCharArr:[Character] = Array(strToSplit.characters)
    print("splitedCharArr=\(splitedCharArr)") //splitedCharArr=["周", "杰", "伦"]

    return splitedCharArr
}

    /*
    * splitSingleStrToCharArr demo
    */
    let stringToSplit:String = "一个字符串"
    let spiltedCharArr:[Character] = splitSingleStrToCharArr(stringToSplit)
    print("spiltedCharArr=\(spiltedCharArr)") //["一", "个", "字", "符", "串"]

extension String {

    //split string into character array
    //周杰伦 -> ["周", "杰", "伦"]
    func splitToCharArr() -> [Character] {
        let splitedCharArr:[Character] = Array(self.characters)
        
        return splitedCharArr
    }

    
    //split string into string array, normally seperator is white space
    //if origin string not containing white space, then pass the empty string here, will split to every single char as string
    func splitToStrArr(seperatorStr:String = "") -> [String] {
        guard self.notEmpty else {
            return [String]()
        }
        
        //print("strToSplit=\(strToSplit), seperatorStr=\(seperatorStr)")
        
        var splitedStrArr:[String] = [String]()
        if seperatorStr.notEmpty {
            let seperatorChar:Character = seperatorStr.splitToCharArr()[0]
            splitedStrArr = self.characters.split(seperatorChar).map(String.init)
        } else {
            //split string(without space) into every single char as string
            let splitedCharArr:[Character] = self.splitToCharArr()
            for eachChar in splitedCharArr {
                splitedStrArr.append(String(eachChar))
            }
        }
        
        //print("splitedStrArr=\(splitedStrArr)")
        
        return splitedStrArr
    }
    
}

示例用法：

    /*
    * splitToCharArr demo
    */
    let stringToSplit:String = "一个字符串"
    let spiltedCharArr:[Character] = stringToSplitsplitToCharArr.()
    print("spiltedCharArr=\(spiltedCharArr)") //["一", "个", "字", "符", "串"]

    /*
    * splitToStrArr demo
    */
    //let noneSeperatorStr:String = ""
    let strWithoutSpace:String = "中间没有空格单个字符串"
    //let splitedStrArr_withoutSpace:[String] = strWithoutSpace.splitToStrArr(noneSeperatorStr)
    let splitedStrArr_withoutSpace:[String] = strWithoutSpace.splitToStrArr()
    print("splitedStrArr_withoutSpace=\(splitedStrArr_withoutSpace)") //["中", "间", "没", "有", "空", "格", "单", "个", "字", "符", "串"]

    let spaceSeperatorStr:String = " "
    let stringContainingSpace:String = "中 间   有  空     格 的 字   符 串 "
    let splitedStrArr_containingSpace:[String] = stringContainingSpace.splitToStrArr(spaceSeperatorStr)
    print("splitedStrArr_containingSpace=\(splitedStrArr_containingSpace)") //["中", "间", "有", "空", "格", "的", "字", "符", "串"]

注：更多其他函数，已整理至我的：

https://github.com/crifan/CrifanString

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