进一步完成

Student:
- 内部新增getGeneralScore()方法
StudentManager:
- 按学生总分由高到低生成名次表
- 按学生学号由小到大生成成绩表
- 按学生学号由小到大生成成绩表

(有点困了...写得有点乱了... (￣﹏￣；))

src/main/java/me/lensfrex/manager/data/ManagerTool.java

@@ -4,6 +4,9 @@ import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.Map;
 
+/**
+ * 对Student类的操作的底层封装，有最基础的操作
+ */
 public class ManagerTool {
     private final ArrayList<Student> students;
 
@@ -23,6 +26,24 @@ public class ManagerTool {
         students.add(student);
     }
 
+    /**
+     * 删除一个学生（按ID）
+     *
+     * @param id 学生id，long格式
+     */
+    public void removeStudent(long id) {
+        students.remove(getStudent(id));
+    }
+
+    /**
+     * 删除一个学生（按姓名）
+     *
+     * @param name 学生姓名，long格式
+     */
+    public void removeStudent(String name) {
+        students.remove(getStudent(name));
+    }
+
     /**
      * 按名字查找学生
      *
@@ -60,7 +81,8 @@ public class ManagerTool {
     /**
      * 对学生列表进行排序
      *
-     * @param compareMethod 排序方式，可根据名字字典顺序（升序，0）、学生学号（升序，1）以及总成绩（降序，2）进行排序。
+     * @param compareMethod 排序方式
+     *                      可根据名字字典顺序（升序，0）、学生学号（升序，1）以及总成绩（降序，2）进行排序。
      * @return 排序后的学生列表
      */
     public ArrayList<Student> getSortedStudentList(int compareMethod) {
@@ -99,7 +121,7 @@ public class ManagerTool {
      *
      * @return 包含全班所有同学成绩的HashMap，key为姓名，value为总成绩数据
      */
-    public HashMap<String, Integer> getStudentScores() {
+    public HashMap<String, Integer> getAllStudentScores() {
         HashMap<String, Integer> result = new HashMap<>();
 
         int scoreSum = 0;
@@ -128,6 +150,7 @@ public class ManagerTool {
         return ranking;
     }
 
+
     /**
      * 获取所有科目名称，若无学生信息则返回null
      *

src/main/java/me/lensfrex/manager/data/Student.java

@@ -41,18 +41,16 @@ public class Student implements Serializable {
         this.score = score;
     }
 
-    public static Comparator<Student> compareByName = (s1, s2) -> s1.getName().compareTo(s2.getName());
-    public static Comparator<Student> compareById = (s1, s2) -> (int) (s1.id - s2.id);
-    public static Comparator<Student> compareByGeneralScore = (s1, s2) -> {
-        int student1GeneralScore = 0, student2GeneralScore = 0;
-        for (int score : s1.getScore().values()) {
-            student1GeneralScore += score;
+    public int getGeneralScore() {
+        int generalScore = 0;
+        for (int score : getScore().values()) {
+            generalScore += score;
         }
 
-        for (int score : s2.getScore().values()) {
-            student2GeneralScore += score;
+        return generalScore;
     }
 
-        return student1GeneralScore - student2GeneralScore;
-    };
+    public static Comparator<Student> compareByName = (s1, s2) -> s1.getName().compareTo(s2.getName());
+    public static Comparator<Student> compareById = (s1, s2) -> (int) (s1.id - s2.id);
+    public static Comparator<Student> compareByGeneralScore = (s1, s2) -> s1.getGeneralScore() - s2.getGeneralScore();
 }

src/main/java/me/lensfrex/manager/data/StudentManager.java

@@ -3,10 +3,12 @@ package me.lensfrex.manager.data;
 import java.util.ArrayList;
 import java.util.HashMap;
 
+/**
+ * 对Student类的操作的上层封装，有较为多的操作
+ */
 public class StudentManager {
     private final ArrayList<Student> students = new ArrayList<>();
     private final ManagerTool managerTool = new ManagerTool(students);
-    private ArrayList<String> subjects = new ArrayList<>();
 
     /**
      * 增添学生。输入的字符串格式应为 [id] [name] ...[subjectName,score]
@@ -77,7 +79,7 @@ public class StudentManager {
         return scores;
     }
 
-    /**
+    /**-
      * 获取每门科目的平均成绩
      *
      * @return 包含每门课总成绩的HashMap，key为科目名称，value为该科目的平均成绩
@@ -92,4 +94,80 @@ public class StudentManager {
 
         return scores;
     }
+
+    /**
+     * 按学生总分由高到低生成名次表
+     *
+     * @return 名次表字符串
+     */
+    public String generateRankingTable() {
+        StringBuilder stringBuilder = new StringBuilder("Ranking  |  Name  |  General Score\n");
+        ArrayList<Student> sortStudentList = managerTool.getSortedStudentList(ManagerTool.SORT_COMPARE_BY_GENERAL_SCORE);
+
+        for (int i = 0; i < sortStudentList.size(); i++) {
+            stringBuilder
+                    .append(i + 1).append("  |  ")
+                    .append(sortStudentList.get(i).getName()).append("  |  ")
+                    .append(students.get(i).getGeneralScore())
+                    .append('\n');
+        }
+
+        return stringBuilder.toString();
+    }
+
+
+    /**
+     * 按学生学号由小到大生成成绩表
+     *
+     * @return 成绩表字符串
+     */
+    public String generateScoreTableById() {
+        StringBuilder stringBuilder = new StringBuilder("ID  |  Name  |  General Score  |  Subject1: score Subject2: score ...\n");
+        ArrayList<Student> sortStudentList = managerTool.getSortedStudentList(ManagerTool.SORT_COMPARE_BY_GENERAL_SCORE);
+        ArrayList<String> subjects = managerTool.getAllSubjects();
+
+        for (Student student : sortStudentList) {
+            stringBuilder
+                    .append(student.getId()).append("  |  ")
+                    .append(student.getName()).append("  |  ")
+                    .append(student.getGeneralScore()).append("  |  ");
+            for (String subject : subjects) {
+                stringBuilder
+                        .append(subject).append(": ")
+                        .append(student.getScore().get(subject)).append(' ');
+            }
+
+            stringBuilder.append('\n');
+        }
+
+        return stringBuilder.toString();
+    }
+
+    /**
+     * 按学生学号由小到大生成成绩表
+     *
+     * @return 成绩表字符串
+     */
+    public String generateScoreTableByName() {
+        StringBuilder stringBuilder = new StringBuilder("Name  |  Id  |  General Score  |  Subject1/score Subject2: score ...\n");
+        ArrayList<Student> sortStudentList = managerTool.getSortedStudentList(ManagerTool.SORT_COMPARE_BY_GENERAL_SCORE);
+        ArrayList<String> subjects = managerTool.getAllSubjects();
+
+        for (Student student : sortStudentList) {
+            stringBuilder
+                    .append(student.getName()).append("  |  ")
+                    .append(student.getId()).append("  |  ")
+                    .append(student.getGeneralScore()).append("  |  ");
+            for (String subject : subjects) {
+                stringBuilder
+                        .append(subject).append(": ")
+                        .append(student.getScore().get(subject)).append(' ');
+            }
+
+            stringBuilder.append('\n');
+        }
+
+        return stringBuilder.toString();
+    }
+
 }

src/main/resources/me.lensfrex.manager/studentInformationExample.txt

@@ -1,4 +1,4 @@
 - Please enter the student information following this format:
   [id] [name] ...[subjectName,score]
 - Example:
-  23333333 Lag English,100 Math,99 History,98
+  23333333 LagSeeing English,100 Math,99 History,98