From 0f5316f9129deea5efe1653b692ac553cd3f274b Mon Sep 17 00:00:00 2001
From: Cui YongXing <2835316714@qq.com>
Date: Thu, 8 Aug 2024 09:19:45 +0800
Subject: [PATCH] 1
---
.gitignore | 33 ++++++++
pom.xml | 76 +++++++++++++++++++
.../com/example/demo/Day19Application.java | 13 ++++
.../java/com/example/demo/test/Student.java | 17 +++++
src/main/java/com/example/demo/test/Test.java | 54 +++++++++++++
.../example/demo/Day19ApplicationTests.java | 13 ++++
6 files changed, 206 insertions(+)
create mode 100644 .gitignore
create mode 100644 pom.xml
create mode 100644 src/main/java/com/example/demo/Day19Application.java
create mode 100644 src/main/java/com/example/demo/test/Student.java
create mode 100644 src/main/java/com/example/demo/test/Test.java
create mode 100644 src/test/java/com/example/demo/Day19ApplicationTests.java
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..549e00a
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,33 @@
+HELP.md
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
diff --git a/pom.xml b/pom.xml
new file mode 100644
index 0000000..6d10fe2
--- /dev/null
+++ b/pom.xml
@@ -0,0 +1,76 @@
+
+
+ 4.0.0
+ com.example
+ day19
+ 0.0.1-SNAPSHOT
+ day19
+ Demo project for Spring Boot
+
+ 1.8
+ UTF-8
+ UTF-8
+ 2.6.13
+
+
+
+ org.springframework.boot
+ spring-boot-starter
+
+
+
+ org.projectlombok
+ lombok
+
+
+ org.springframework.boot
+ spring-boot-starter-test
+ test
+
+
+
+
+
+ org.springframework.boot
+ spring-boot-dependencies
+ ${spring-boot.version}
+ pom
+ import
+
+
+
+
+
+
+
+ org.apache.maven.plugins
+ maven-compiler-plugin
+ 3.8.1
+
+ 1.8
+ 1.8
+ UTF-8
+
+
+
+ org.springframework.boot
+ spring-boot-maven-plugin
+ ${spring-boot.version}
+
+ com.example.demo.Day19Application
+ true
+
+
+
+ repackage
+
+ repackage
+
+
+
+
+
+
+
+
diff --git a/src/main/java/com/example/demo/Day19Application.java b/src/main/java/com/example/demo/Day19Application.java
new file mode 100644
index 0000000..8d7771b
--- /dev/null
+++ b/src/main/java/com/example/demo/Day19Application.java
@@ -0,0 +1,13 @@
+package com.example.demo;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Day19Application {
+
+ public static void main(String[] args) {
+ SpringApplication.run(Day19Application.class, args);
+ }
+
+}
diff --git a/src/main/java/com/example/demo/test/Student.java b/src/main/java/com/example/demo/test/Student.java
new file mode 100644
index 0000000..a05eb1b
--- /dev/null
+++ b/src/main/java/com/example/demo/test/Student.java
@@ -0,0 +1,17 @@
+package com.example.demo.test;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class Student {
+ private Integer id;
+ private String name;
+ private String clazz;
+ private Double score;
+}
diff --git a/src/main/java/com/example/demo/test/Test.java b/src/main/java/com/example/demo/test/Test.java
new file mode 100644
index 0000000..756fd2f
--- /dev/null
+++ b/src/main/java/com/example/demo/test/Test.java
@@ -0,0 +1,54 @@
+package com.example.demo.test;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.OptionalDouble;
+import java.util.stream.Collectors;
+import java.util.stream.DoubleStream;
+import java.util.stream.Stream;
+
+public class Test {
+
+ public static void main(String[] args) {
+
+
+ //创建对象
+ Student student1 = new Student(1, "张三", "语文", 80.0);
+ Student student2 = new Student(2, "张三", "数学", 81.5);
+ Student student3 = new Student(3, "李四", "语文", 90.0);
+ Student student4 = new Student(4, "王五", "语文", 87.5);
+ Student student5 = new Student(5, "王五", "数学", 98.0);
+ List list = new ArrayList<>();
+ //添加集合
+ list.add(student1);
+ list.add(student2);
+ list.add(student3);
+ list.add(student4);
+ list.add(student5);
+
+
+ //通过steam循环计算
+ List collect = list.stream().map(student -> {
+ int c = 0;
+ double sum = 0.0;
+ for (Student stu : list) {
+ if (stu.getName().equals(student.getName())) {
+ sum += stu.getScore();
+ c++;
+ }
+ }
+ double avg = sum / c;
+ Student build = Student.builder().name(student.getName())
+ .score(avg).build();
+ return build;
+
+ }).distinct().collect(Collectors.toList());
+ for (Student student : collect) {
+ System.out.println(student.getName()+" "+student.getScore());
+ }
+
+
+ }
+
+
+}
diff --git a/src/test/java/com/example/demo/Day19ApplicationTests.java b/src/test/java/com/example/demo/Day19ApplicationTests.java
new file mode 100644
index 0000000..9ee24a4
--- /dev/null
+++ b/src/test/java/com/example/demo/Day19ApplicationTests.java
@@ -0,0 +1,13 @@
+package com.example.demo;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class Day19ApplicationTests {
+
+ @Test
+ void contextLoads() {
+ }
+
+}