commit 4e3c5635aaf90019751e83433353ed9de427324e
Author: LQS <2506203757@qq.com>
Date: Thu Aug 8 08:59:27 2024 +0800
初始化
diff --git a/.gitignore b/.gitignore
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+++ b/.gitignore
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+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store
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diff --git a/.idea/.gitignore b/.idea/.gitignore
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+++ b/.idea/.gitignore
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+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
diff --git a/.idea/encodings.xml b/.idea/encodings.xml
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+++ b/.idea/encodings.xml
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+
+
+
+
+
+
+
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diff --git a/.idea/misc.xml b/.idea/misc.xml
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+++ b/.idea/misc.xml
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+
+
+
+
+
+
+
+
+
+
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diff --git a/.idea/vcs.xml b/.idea/vcs.xml
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+++ b/.idea/vcs.xml
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+
+
+
+
+
+
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diff --git a/pom.xml b/pom.xml
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--- /dev/null
+++ b/pom.xml
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+
+
+ 4.0.0
+
+ com.icecream
+ zgl-rikao-day19-8-8
+ 1.0-SNAPSHOT
+
+
+ 8
+ 8
+ UTF-8
+
+
+
diff --git a/src/main/java/com/muyu/pojo/Student.java b/src/main/java/com/muyu/pojo/Student.java
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+++ b/src/main/java/com/muyu/pojo/Student.java
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+package com.muyu.pojo;
+
+
+
+
+public class Student {
+ /**
+ * 编号
+ */
+ private int id;
+ /**
+ * 姓名
+ */
+ private String name;
+ /**
+ * 科目
+ */
+ private String subject;
+ /**
+ * 分数
+ */
+ private int score;
+
+ @Override
+ public String toString() {
+ return
+ "编号:" + id +
+ "姓名:" + name +
+ "科目:" + subject +
+ "分数" + score ;
+ }
+
+ public int getId() {
+ return id;
+ }
+
+ public void setId(int id) {
+ this.id = id;
+ }
+
+ public String getName() {
+ return name;
+ }
+
+ public void setName(String name) {
+ this.name = name;
+ }
+
+ public String getSubject() {
+ return subject;
+ }
+
+ public void setSubject(String subject) {
+ this.subject = subject;
+ }
+
+ public int getScore() {
+ return score;
+ }
+
+ public void setScore(int score) {
+ this.score = score;
+ }
+
+ public Student() {
+ }
+
+ public Student(int id, String name, String subject, int score) {
+ this.id = id;
+ this.name = name;
+ this.subject = subject;
+ this.score = score;
+ }
+}
diff --git a/src/main/java/com/muyu/test/StudentTest.java b/src/main/java/com/muyu/test/StudentTest.java
new file mode 100644
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+++ b/src/main/java/com/muyu/test/StudentTest.java
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+package com.muyu.test;
+
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+public class StudentTest {
+ public static void main(String[] args) {
+ List studentInfoStrings = new ArrayList<>();
+ //创建并添加学生信息到集合
+ studentInfoStrings.add("1,张三,语文,100");
+ studentInfoStrings.add("1,张三,数学,90");
+ studentInfoStrings.add("2,李四,语文,95");
+ studentInfoStrings.add("2,李四,数学,92");
+ studentInfoStrings.add("3,王五,语文,88");
+ studentInfoStrings.add("3,王五,数学,82");
+
+ // 打印集合
+ studentInfoStrings.forEach(System.out::println);
+
+ System.out.println("----------------------添加数据之后-----------------------");
+
+ Map averageScores = studentInfoStrings.stream()
+ .map(s -> s.split(","))
+ .collect(Collectors.groupingBy(
+ arr -> arr[1], // 假设arr[1]是名字
+ Collectors.mapping(
+ arr -> Integer.parseInt(arr[3]), // 假设arr[3]是分数
+ Collectors.averagingInt(i -> i)
+ )
+ ));
+
+ // 输出平均成绩结果
+ averageScores.forEach((name, avgScore) -> System.out.println(name + "的平均成绩是: " + avgScore));
+
+ }
+
+
+}