package com.gblfy.gxts;import lombok.AllArgsConstructor;
import lombok.Data;
import org.junit.Before;
import org.junit.Test;import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;/*** 案例1：* 某班集中有20名学生，每名学生有5门课的考试成绩。* 其中缺考的科目分数字段为空，需要找出缺考的学生都是谁？*/
public class CaseTwo {/*** 考试成绩模型*/@Data@AllArgsConstructorstatic class ExamStudentSore {/*** 考生姓名*/private String studentName;/*** 考试成绩*/private Integer scoreValue;/*** 科目*/private String subject;}//初始化考试成绩容器Map<String, List<ExamStudentSore>> studentMap;//初始化数据@Beforepublic void init() {//声明考试成绩容器studentMap = new HashMap<>();//张三考试成绩List<ExamStudentSore> zsScoreList = new ArrayList<>();zsScoreList.add(new ExamStudentSore("张三", 80, "CHINESE"));zsScoreList.add(new ExamStudentSore("张三", 90, "MATHS"));zsScoreList.add(new ExamStudentSore("张三", 100, "ENGLISH"));zsScoreList.add(new ExamStudentSore("张三", 100, "BIOLOGICAL"));zsScoreList.add(new ExamStudentSore("张三", 80, "SPORTS"));//王五考试成绩List<ExamStudentSore> wwScoreList = new ArrayList<>();wwScoreList.add(new ExamStudentSore("王五", 80, "CHINESE"));wwScoreList.add(new ExamStudentSore("王五", null, "MATHS"));wwScoreList.add(new ExamStudentSore("王五", 100, "ENGLISH"));wwScoreList.add(new ExamStudentSore("王五", 100, "BIOLOGICAL"));wwScoreList.add(new ExamStudentSore("王五", 80, "SPORTS"));//赵六考试成绩List<ExamStudentSore> zlScoreList = new ArrayList<>();zlScoreList.add(new ExamStudentSore("赵六", null, "CHINESE"));zlScoreList.add(new ExamStudentSore("赵六", 90, "MATHS"));zlScoreList.add(new ExamStudentSore("赵六", 100, "ENGLISH"));zlScoreList.add(new ExamStudentSore("赵六", 100, "BIOLOGICAL"));zlScoreList.add(new ExamStudentSore("赵六", 80, "SPORTS"));//将张三、王五赵六成绩放入考试成绩容器studentMap.put("张三", zsScoreList);studentMap.put("王五", wwScoreList);studentMap.put("赵六", zlScoreList);}/*** 查找考试缺考的学生名单列表*/@Testpublic void findNoScoreStudentList() {studentMap.forEach((studentName, studentScoreList) -> {boolean bool = studentScoreList.stream().anyMatch(score -> {return score.getScoreValue() == null;});if (bool) {System.out.println("此学生【" + studentName + "】存在缺考的现象！");}});}
}