private int Compare(DataWeightedKNearestNeighborsModel data1, DataWeightedKNearestNeighborsModel data2)
        {
            int compare = data1.Distance.CompareTo(data2.Distance);

            // CompareTo() method
            return(compare);
        }
        public string run(List <Data> listInputData, Data predictData, int K)
        {
            double maxTemperature, minTemperature;

            if (findMaxTemperature(listInputData, out maxTemperature) &&
                fineMinTemperature(listInputData, out minTemperature))
            {
                List <DataWeightedKNearestNeighborsModel> listData = new List <DataWeightedKNearestNeighborsModel>();
                foreach (Data inputdata in listInputData)
                {
                    DataWeightedKNearestNeighborsModel weightKNNData = new DataWeightedKNearestNeighborsModel();
                    weightKNNData.Eat         = inputdata.Eat;
                    weightKNNData.Sick        = inputdata.Sick;
                    weightKNNData.Temperature = inputdata.Temperature;
                    weightKNNData.Normalized  = NormalizeAttributes(maxTemperature, minTemperature, inputdata.Temperature);

                    double predicNomorized = NormalizeAttributes(maxTemperature, minTemperature, predictData.Temperature);
                    weightKNNData.Distance = EuclideanDistance(weightKNNData.Eat, weightKNNData.Normalized, predictData.Eat, predicNomorized);
                    listData.Add(weightKNNData);
                }
                List <DataWeightedKNearestNeighborsModel> listWeightKNNData = getKElement(K, listData);
                calWeight(listWeightKNNData);
                double[] predicArr;
                if (predicData(listWeightKNNData, out predicArr))
                {
                    if (predicArr[(int)GroupIndex.Y] > predicArr[(int)GroupIndex.N])
                    {
                        return("Y");
                    }
                    else
                    {
                        return("N");
                    }
                }
            }
            return("cannot run");
        }