|
@@ -20,6 +20,7 @@ import java.util.*;
|
20
|
20
|
import java.util.concurrent.ConcurrentHashMap;
|
21
|
21
|
import java.util.regex.Matcher;
|
22
|
22
|
import java.util.regex.Pattern;
|
|
23
|
+import java.util.stream.Collectors;
|
23
|
24
|
|
24
|
25
|
/**
|
25
|
26
|
* @author ywx
|
|
@@ -398,16 +399,106 @@ public class MarkingUtil {
|
398
|
399
|
return N_Utils.formatDouble(Math.sqrt(fc(x)), 2);
|
399
|
400
|
}
|
400
|
401
|
|
|
402
|
+ //中位数
|
|
403
|
+ public static double zws(List<Double> list){
|
|
404
|
+ if (N_Utils.isListEmpty(list)) return 0;
|
|
405
|
+ // 先对列表进行排序
|
|
406
|
+ List<Double> sorteList = list.stream().sorted().collect(Collectors.toList());
|
|
407
|
+
|
|
408
|
+ int size = sorteList.size();
|
|
409
|
+ if (size % 2 == 1) {
|
|
410
|
+ // 数据个数为奇数,取中间位置的元素
|
|
411
|
+ return sorteList.get(size / 2);
|
|
412
|
+ } else {
|
|
413
|
+ // 数据个数为偶数,取中间两个元素的平均值
|
|
414
|
+ int midIndex1 = size / 2 - 1;
|
|
415
|
+ int midIndex2 = size / 2;
|
|
416
|
+ return (sorteList.get(midIndex1) + sorteList.get(midIndex2)) / 2;
|
|
417
|
+ }
|
|
418
|
+ }
|
401
|
419
|
|
402
|
|
- public static void main(String[] args) {
|
403
|
|
- String str = "ADAC-D-(C)(AB)(CD)(ACB)BB";
|
|
420
|
+ //众数
|
|
421
|
+ public static List<Double> zs(List<Double> list){
|
|
422
|
+ List<Double> modes = new ArrayList<>();
|
|
423
|
+ if (N_Utils.isListEmpty(list)) return modes;
|
|
424
|
+
|
|
425
|
+ // 使用HashMap来统计每个元素出现的次数
|
|
426
|
+ Map<Double, Long> countMap = list.stream()
|
|
427
|
+ .collect(Collectors.groupingBy(e -> e, Collectors.counting()));
|
|
428
|
+
|
|
429
|
+ long maxCount = 0;
|
|
430
|
+ // 找出最大的出现次数
|
|
431
|
+ for (long count : countMap.values()) {
|
|
432
|
+ maxCount = Math.max(maxCount, count);
|
|
433
|
+ }
|
|
434
|
+
|
|
435
|
+ // 找出所有出现次数等于最大出现次数的元素,即为众数
|
|
436
|
+ for (Map.Entry<Double, Long> entry : countMap.entrySet()) {
|
|
437
|
+ if (entry.getValue() == maxCount) {
|
|
438
|
+ modes.add(entry.getKey());
|
|
439
|
+ }
|
|
440
|
+ }
|
|
441
|
+ return modes;
|
|
442
|
+ }
|
|
443
|
+
|
|
444
|
+ //超均率 =(个人单科得分-全校平均分)÷全校平均分
|
|
445
|
+ public static double cjl(Object v1,Object v2){
|
|
446
|
+ if(v2 == null || "0".equals(v2)) return 0;
|
|
447
|
+
|
|
448
|
+ BigDecimal b1 = new BigDecimal(v1.toString());
|
|
449
|
+ BigDecimal b2 = new BigDecimal(v2.toString());
|
|
450
|
+ return b1.subtract(b2).divide(b2, 2, BigDecimal.ROUND_DOWN).doubleValue();
|
|
451
|
+ }
|
|
452
|
+
|
|
453
|
+ //标准分 班级标准分 =(班级得分-全校平均分)÷年级标准差
|
|
454
|
+ public static double bzf(Double score, Double avgscore, Double bzc) {
|
|
455
|
+ double bzscore = div(sub(score, avgscore), bzc);
|
|
456
|
+ return N_Utils.formatDouble(bzscore, 2);
|
|
457
|
+ }
|
|
458
|
+
|
|
459
|
+ //综合率 固定计算=平均得分率*50%+优秀率*25%+及格率*25%
|
|
460
|
+ public static double zhl(Double v1, Double v2, Double v3) {
|
|
461
|
+ double s1 = mul(v1, 0.5);
|
|
462
|
+ double s2 = mul(v2, 0.25);
|
|
463
|
+ double s3 = mul(v3, 0.25);
|
|
464
|
+ return add(s1, add(s2, s3));
|
|
465
|
+ }
|
|
466
|
+
|
|
467
|
+ //学科上线贡献率 班级学科上线贡献率=(班级学科上线率-班级总分上线率)-(学校学科的上线率-学校总分上线率)
|
|
468
|
+ public static double sxgxl(Double v1,Double v2,Double v3,Double v4){
|
|
469
|
+ double s1 = sub(v1,v2);
|
|
470
|
+ double s2 = sub(v3,v4);
|
|
471
|
+ return sub(s1,s2);
|
|
472
|
+ }
|
404
|
473
|
|
405
|
|
- List<String> result = extractCharacters(str);
|
|
474
|
+ //短板学生 学科短板学生:偏科指数=(单科分值-全科平均分)÷全科标准差 ,如果偏科指数>1,标识此科为短板学科
|
|
475
|
+ public static double dbxs(Double v1,Double v2,Double v3){
|
|
476
|
+ return div(sub(v1,v2),v3);
|
|
477
|
+ }
|
406
|
478
|
|
407
|
|
- double pscore = 0;
|
|
479
|
+ //鉴别指数 试题鉴别指数 = 前27%的学生得分率-后27%的学生得分率
|
|
480
|
+ //将学生按总分排序(去掉缺考的学生),取前27%、后27%的学生,分别计算在该题上的得分率,两者之差即为鉴别指数
|
|
481
|
+ public static double jbzs(List<Double> list,Double qscore){
|
|
482
|
+ List<Double> sortList = list.stream().sorted().collect(Collectors.toList());
|
|
483
|
+ int size = sortList.size();
|
|
484
|
+ int count = (int)(size * 0.27);//27%学生数量
|
|
485
|
+
|
|
486
|
+ // 前27%的学生
|
|
487
|
+ List<Double> topGroup = sortList.subList(0, count);
|
|
488
|
+ double topScore = topGroup.stream().mapToDouble(Double::doubleValue).sum();
|
|
489
|
+ double topRate = div(topScore, mul(qscore, count));
|
|
490
|
+
|
|
491
|
+ // 后27%的学生
|
|
492
|
+ List<Double> bottomGroup = sortList.subList(size - count, size);
|
|
493
|
+ double bottomScore = bottomGroup.stream().mapToDouble(Double::doubleValue).sum();
|
|
494
|
+ double bottomRate = div(bottomScore, mul(qscore, count));
|
|
495
|
+
|
|
496
|
+ // 鉴别指数
|
|
497
|
+ return sub(topRate, bottomRate);
|
|
498
|
+ }
|
408
|
499
|
|
409
|
|
- double psum = add(pscore,10.5);
|
410
|
|
- System.out.println(psum);
|
|
500
|
+ public static void main(String[] args) {
|
|
501
|
+ System.out.println(cjl(50,40));
|
411
|
502
|
}
|
412
|
503
|
|
413
|
504
|
|