编辑代码

var myString = "Hello world!     -  swift.jsrun.net"
print(myString)
for i in 1...9{
    var resultString:String = ""
    for j in 1...i{
        if(j== i){//该换行了
        resultStr == "\(j) * \(i) = \(j *i)\n"
        }else {
            resultStr += "\(j) * \(i) = \(j * i) "
        }
    }
    print(resultStr)
}
}