无结果时移植条件，待验证问题测试

ie-admin/src/main/java/com/ruoyi/web/service/PaperService.java

@@ -519,7 +519,11 @@ public class PaperService {
                     addRandomList(knowTypeAssign.getKnowId(), QuestionType.of(knowTypeAssign.getType()), questions, random, total.longValue(), 1L, 1.0, existQuestionIdSet, 1, pqList);
                     if(oldSize != pqList.size()) {
                         knowTypeAssign.exclAssign++;
+                    } else {
+                        knowTypeAssignList.remove(idx);
                     }
+                } else {
+                    knowTypeAssignList.remove(idx);
                 }
             } else {
                 knowTypeAssignList.remove(idx);