生成考试报告

smarking/src/main/java/com/xhkjedu/smarking/model/report/reportstu/MsrStudent.java

     @Transient
     //学生考试状态0未进场1已进场2已交卷3缺考
     private Integer sstate;
+    @Transient
+    //得分率
+    private Double scorerate;
 }

smarking/src/main/java/com/xhkjedu/smarking/service/report/reportother/MsrExamService.java

         Integer totalnum = N_Utils.obj2Int(students.stream().map(MsClassStudent::getStudentid).distinct().count());
         Integer stunum = N_Utils.obj2Int(paperStudents.stream().filter(s -> s.getSstate().equals(2)).map(MsPaperStudent::getStudentid).distinct().count());
         Integer missnum = totalnum - stunum;
+        double fullscore = subjects.stream().mapToDouble(MsPaper::getPscore).sum();
         List<MsrStudent> schoolStudents = new ArrayList<>();//学校学生成绩
         List<MsrStudent> schoolSubjectStudents = new ArrayList<>();//学校科目学生成绩
         List<MsrStudent> classStudents = new ArrayList<>();//班级学生成绩
             cs.setStudentid(studentid);
             cs.setStuscore(list.stream().mapToDouble(MsPaperStudent::getStuscore).sum());
             cs.setSstate(list.stream().max(Comparator.comparing(MsPaperStudent::getSstate)).get().getSstate());
+            cs.setScorerate(N_Utils.getDoubleDivideAndMulitiply(cs.getStuscore(), fullscore));
             schoolStudents.add(cs);
         }
         List<MsrStudent> paperStudents2 = new ArrayList<>();
 
         //科目分析
         Map<String, List<MsPaperStudent>> subjectCollect = paperStudents.stream().collect(Collectors.groupingBy(MsPaperStudent::getSubjectid));
-        double fullscore = subjects.stream().mapToDouble(MsPaper::getPscore).sum();
         List<MsrSubject> msrSubjects = new ArrayList<>();
         MsrSubject msrSubject = new MsrSubject();
         msrSubject.setExamid(examid);
         msrSubject.setMinscore(schoolStatisticsMin);
         msrSubject.setAvgscore(schoolStatisticsAverage);
         msrSubject.setScorerate(N_Utils.getDoubleDivideAndMulitiply(schoolStatisticsAverage, fullscore));
+        List<Double> scores = schoolStudents2.stream().map(MsrStudent::getStuscore).sorted().collect(Collectors.toList());
+        double bzc = MarkingUtil.bzc(scores);
+        msrSubject.setBzc(bzc);
+        msrSubject.setCyxs(N_Utils.getDoubleDivideAndMulitiply(bzc, schoolStatisticsAverage));
+        msrSubject.setNd(MarkingUtil.div(schoolStatisticsAverage, fullscore));
+        msrSubject.setQfd(MarkingUtil.qfd(scores));
+        List<Double> scoreRates = schoolStudents2.stream().map(MsrStudent::getScorerate).sorted().collect(Collectors.toList());
+        double dfllc = MarkingUtil.sub(scoreRates.get(scoreRates.size() - 1), scoreRates.get(0));
+        msrSubject.setDflxdlc(MarkingUtil.div(dfllc, schoolStatisticsAverage));
+        msrSubject.setDfllc(dfllc);
         msrSubject.setTotalnum(totalnum);
         msrSubject.setStunum(stunum);
         msrSubject.setMissnum(missnum);

smarking/src/main/java/com/xhkjedu/smarking/utils/MarkingUtil.java

         return N_Utils.formatDouble(Math.sqrt(fc(x)), 2);
     }
 
+    //区分度=2×（高分组平均分-低分组平均分）/100
+    public static double qfd(List<Double> scores) {
+        if (N_Utils.isListEmpty(scores)) return 0;
+
+        int totalCount = scores.size();
+        int highCount = (int) Math.ceil(totalCount * 0.27); // 高分组人数
+        int lowCount = (int) Math.ceil(totalCount * 0.27);  // 低分组人数
+
+        List<Double> highGroup = new ArrayList<>(scores.subList(totalCount - highCount, totalCount)); // 高分组
+        List<Double> lowGroup = new ArrayList<>(scores.subList(0, lowCount)); // 低分组
+        // 计算高分组和低分组的平均分
+        double highGroupAvg = calculateAverage(highGroup);
+        double lowGroupAvg = calculateAverage(lowGroup);
+        return div(mul(2, sub(highGroupAvg, lowGroupAvg)), 100);
+    }
+
+    //计算平均分
+    public static double calculateAverage(List<Double> scores) {
+        if (N_Utils.isListEmpty(scores)) return 0;
+        double sum = 0.0;
+        for (double score : scores) {
+            sum = add(sum, score);
+        }
+        return div(sum, scores.size());
+    }
+
 
     public static void main(String[] args) {
         String str = "ADAC-D-(C)(AB)(CD)(ACB)BB";