fix

examcloud-core-questions-service/src/main/java/cn/com/qmth/examcloud/core/questions/service/impl/RandomPaperServiceImpl.java

@@ -206,9 +206,9 @@ public class RandomPaperServiceImpl implements RandomPaperService {
 					Integer difficultyCount = 0;
 					if (CollectionUtils.isNotEmpty(paperDetailStruct.getUnitStructs())) {
 						for (PaperDetailUnitStructDto unitStruct : paperDetailStruct.getUnitStructs()) {
-							simpleCount = unitStruct.getPublicSimple() + unitStruct.getNoPublicSimple();
-							mediumCount = unitStruct.getPublicMedium() + unitStruct.getNoPublicMedium();
-							difficultyCount = unitStruct.getPublicDifficulty() + unitStruct.getNoPublicDifficulty();
+							simpleCount = simpleCount+unitStruct.getPublicSimple() + unitStruct.getNoPublicSimple();
+							mediumCount = mediumCount+unitStruct.getPublicMedium() + unitStruct.getNoPublicMedium();
+							difficultyCount = difficultyCount+unitStruct.getPublicDifficulty() + unitStruct.getNoPublicDifficulty();
 						}
 					}
 					sqinfo.setHardInfo(new StructQuestionCountInfo(difficultyCount, true));