问题代码: val sample_data_combine_result=List( (0,(List(FitModel(4022,1447.92,-8.38983306721434,2.0),FitModel(4021,1447.92,-8.38983306721434,2.0)),2)), (1,(List(FitModel(1083,389.88,-11.057139857142857,3.0)),1)), (2,(List(FitModel(4022,1447.92,-8.3898330