var stringCompareBlock: (String,String)->Bool = { (str1:String, str2:String) -> Bool in

        var nsStr1 = str1 as NSString

        var nsStr2 = str2 as NSString

        var encode:NSStringEncoding = CFStringConvertEncodingToNSStringEncoding(CFStringEncoding(CFStringEncodings.GB_18030_2000.rawValue))

        var temp1:NSString = nsStr1.stringByAddingPercentEscapesUsingEncoding(encode)!

        var temp2:NSString = nsStr2.stringByAddingPercentEscapesUsingEncoding(encode)!

        return temp1.compare(temp2) == NSComparisonResult.OrderedAscending

    }