完工

完成科目成绩层次分析
新增中文帮助信息...
其他小细节过段时间再小修小改

readme.md

@@ -1,6 +1,6 @@
-# StudentManager-S
+# SManager-S
 
-嗯，正如你所见，这项目叫做StudentManager-S
+就是StudentManager-S啦！
 
 “-S”不是指“Super”，而是"Simple"  (￣﹏￣；) 
 

src/main/java/me/lensfrex/manager/Main.java

@@ -25,6 +25,7 @@ public class Main {
         switch (command) {
             case "null":
             case "0":
+                System.out.println("See you later!");
                 return -1;
             case "1":
                 System.out.println(Worker.studentInformationExample);
@@ -81,8 +82,7 @@ public class Main {
                 }
                 break;
             case "10":
-                System.out.println("Not support yet ：）");
+                worker.printScoreAnalysis();
-                System.out.println("It will come out soon.");
                 break;
             case "11":
                 worker.listRecord();
@@ -90,6 +90,9 @@ public class Main {
             case "12":
                 worker.printHelp();
                 break;
+            case "13":
+                worker.printCnHelp();
+                break;
             default:
                 System.out.println("- Don't recognize... Please enter again. (Enter 12 to show help again)");
                 break;

src/main/java/me/lensfrex/manager/Worker.java

@@ -11,6 +11,7 @@ import java.util.ArrayList;
 public class Worker {
 
     public static final String helpMessage = IOUtil.inputStreamToString(Main.class.getResourceAsStream("/me.lensfrex.manager/helpMessage.txt"), StandardCharsets.UTF_8);
+    public static final String cnHelpMessage = IOUtil.inputStreamToString(Main.class.getResourceAsStream("/me.lensfrex.manager/cnHelpMessage.txt"), StandardCharsets.UTF_8);
     public static final String studentInformationExample = IOUtil.inputStreamToString(Main.class.getResourceAsStream("/me.lensfrex.manager/studentInformationExample.txt"), StandardCharsets.UTF_8);
 
     private final StudentManager studentManager = new StudentManager();
@@ -29,6 +30,10 @@ public class Worker {
         System.out.println(helpMessage);
     }
 
+    public void printCnHelp() {
+        System.out.println(cnHelpMessage);
+    }
+
     /**
      * 根据用户输入添加学生
      *
@@ -153,4 +158,19 @@ public class Worker {
     public String searchByName(String name) {
         return studentManager.getStudentInfo(studentManager.getStudent(name));
     }
-}
+
+    /**
+     * 输出成绩分析
+     */
+    public void printScoreAnalysis() {
+        System.out.println("-----------------------------------------------------------------------------");
+        System.out.println("Subject:\n\tLevel A: levelAmount/percent | Level B: levelAmount/percent ...");
+        System.out.println("-----------------------------------------------------------------------------");
+
+        ArrayList<String> table = studentManager.generateSubjectAnalysis();
+        for (String record : table) {
+            System.out.println(record);
+        }
+    }
+
+}

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

@@ -178,11 +178,11 @@ public class ManagerTool {
     /**
      * 获取所有科目名称，若无学生信息则返回null
      *
-     * @return 包含所有科目名称的Arraylist，若无学生信息则返回null
+     * @return 包含所有科目名称的Arraylist，若无学生信息则返回空的ArrayList
      */
     protected ArrayList<String> getAllSubjects() {
         if (students.isEmpty()) {
-            return null;
+            return new ArrayList<>();
         }
         return new ArrayList<>(students.get(0).getScore().keySet());
     }

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

@@ -313,15 +313,83 @@ public class StudentManager {
         return managerTool.getStudent(id);
     }
 
-
+    /**
-    public HashMap<String, Integer[]> generateSubjectAnalysis(String subject) {
+     * 获取某科目成绩分析HashMap
+     *
+     * @param subject 欲分析的科目
+     * @return 成绩等级人数
+     */
+    private int[] getSubjectAnalysis(String subject) {
         ArrayList<Integer> scores = new ArrayList<>(managerTool.getSubjectScores(subject).values());
         int[] scoreAnalysis = new int[5];
-        HashMap<String, Integer[]> analysis = new HashMap<>();
 
         for (int score : scores) {
+            scoreAnalysis[getScoreLevel(score)]++;
+        }
+
+        return scoreAnalysis;
+    }
+
+    /**
+     * 获取所有成绩分析HashMap
+     *
+     * @return 成绩等级人数
+     */
+    public HashMap<String, int[]> getAllSubjectAnalysis() {
+        ArrayList<String> subjects = managerTool.getAllSubjects();
+        HashMap<String, int[]> analysis = new HashMap<>();
+
+        for (String subject : subjects) {
+            analysis.put(subject, this.getSubjectAnalysis(subject));
+        }
+
+        return analysis;
+    }
+
+    /**
+     * 生成每科成绩层次分析(按百分制)的ArrayList
+     * @return 包含成绩层次分析记录的ArrayList。每个层次等级数据为：人数/百分比
+     */
+    public ArrayList<String> generateSubjectAnalysis() {
+        HashMap<String, int[]> analysis = getAllSubjectAnalysis();
+        ArrayList<String> subjects = new ArrayList<>(analysis.keySet());
+
+        ArrayList<String> records = new ArrayList<>();
+        int studentAmount = managerTool.getStudentAmount();
+        for (String subject : subjects) {
+            int[] scoreLevelInfo = analysis.get(subject);
+
+            StringBuilder stringBuilder = new StringBuilder().append(subject).append(":\n\t");
+            stringBuilder
+                    .append(String.format("Level A: %d/%.2f", scoreLevelInfo[SCORE_LEVEL_A], (float) scoreLevelInfo[SCORE_LEVEL_A] / studentAmount)).append(" | ")
+                    .append(String.format("Level B: %d/%.2f", scoreLevelInfo[SCORE_LEVEL_B], (float) scoreLevelInfo[SCORE_LEVEL_B] / studentAmount)).append(" | ")
+                    .append(String.format("Level C: %d/%.2f", scoreLevelInfo[SCORE_LEVEL_C], (float) scoreLevelInfo[SCORE_LEVEL_C] / studentAmount)).append(" | ")
+                    .append(String.format("Level D: %d/%.2f", scoreLevelInfo[SCORE_LEVEL_D], (float) scoreLevelInfo[SCORE_LEVEL_D] / studentAmount)).append(" | ")
+                    .append(String.format("Level E: %d/%.2f", scoreLevelInfo[SCORE_LEVEL_E], (float) scoreLevelInfo[SCORE_LEVEL_E] / studentAmount));
+
+            records.add(stringBuilder.toString());
+        }
+
+        return records;
+    }
 
+    private int getScoreLevel(int score) {
+        if (score >= 90) {
+            return SCORE_LEVEL_A;
+        } else if (score >= 80) {
+            return SCORE_LEVEL_B;
+        } else if (score >= 70) {
+            return SCORE_LEVEL_C;
+        } else if (score >= 60) {
+            return SCORE_LEVEL_D;
+        } else {
+            return SCORE_LEVEL_E;
         }
     }
 
+    public static final int SCORE_LEVEL_A = 0;
+    public static final int SCORE_LEVEL_B = 1;
+    public static final int SCORE_LEVEL_C = 2;
+    public static final int SCORE_LEVEL_D = 3;
+    public static final int SCORE_LEVEL_E = 4;
 }

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

@@ -0,0 +1,20 @@
+----------------------------------------------------------------
+                  欢迎来到 SManager-S
+----------------------------------------------------------------
+您想做什么：
+     1.  添加学生
+     2.  删除学生（按姓名或学号）
+     3.  输出每门课程的总分和平均分
+     4.  输出每个学生的总分
+     5.  输出按每个学生的总分（降序）
+     6.  输出学生信息（按学号升序）
+     7.  输出学生信息（按姓名升序）
+     8.  按学号搜索学生
+     9.  按姓名搜索学生
+     10. 每门课程的统计分析
+     11. 列出所有记录信息（学生及每个科目）
+     12. 输出帮助信息（是英文哦/English）
+     13. 中文帮助信息 ← _ ←
+     0.  退出
+----------------------------------------------------------------
+     做出抉择吧！

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

@@ -1,5 +1,5 @@
 ----------------------------------------------------------------
-                 Welcome to StudentManager-S
+                 Welcome to SManager-S
 ----------------------------------------------------------------
 Do you want to:
     1. Input record
@@ -11,9 +11,10 @@ Do you want to:
     7. Sort in ascending order by name
     8. Search by number
     9. Search by name
-    10. Statistic analysis for every course (not featured yet)
+    10. Statistic analysis for every course
     11. List record
     12. Show help again
+    13. “我 们 需 要 中 文”  ← _ ←
     0. Exit
 ----------------------------------------------------------------
     Please enter your choice: