public JsonMajorGroupByYears findScoreByMajorCode(string majorCode, List <int> years)
        {
            years.Sort((s1, s2) => s2.CompareTo(s1));
            var jsonMajorGroupByYears = new JsonMajorGroupByYears();

            var majorName = _majorRepository.findByCode(majorCode).Result.name;
            var colleges  = new List <JsonCollegesInMajorGroupByYears>();

            foreach (var y in years)
            {
                var jci        = new JsonCollegesInMajorGroupByYears();
                var jscgbyList = new List <JsonScoreCollegeGroupByYears>();

                var majorColleges = _majorCollegeRepository.GetMajorCollegesByMajorCodeAndYear(majorCode, y).Result;
                foreach (var mc in majorColleges)
                {
                    JsonScoreCollegeGroupByYears jscgby = new JsonScoreCollegeGroupByYears();

                    jscgby.groupCode   = mc.groupCode;
                    jscgby.collegeCode = mc.CollegeEntityId;
                    jscgby.collegeName = _collegeRepository.findByCode(mc.CollegeEntityId).Result.name;
                    jscgby.score       = mc.score;
                    jscgbyList.Add(jscgby);
                }

                jci.year     = Convert.ToInt32(y);
                jci.colleges = jscgbyList;
                colleges.Add(jci);
            }


            jsonMajorGroupByYears.majorCode = majorCode;
            jsonMajorGroupByYears.majorName = majorName;
            jsonMajorGroupByYears.colleges  = colleges;

            return(jsonMajorGroupByYears);
        }