Lab 7 init

.gitignore

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+### IntelliJ IDEA ###
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

.idea/.gitignore

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+# Default ignored files
+/shelf/
+/workspace.xml

.idea/misc.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="17" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

.idea/modules.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/Lab7.iml" filepath="$PROJECT_DIR$/Lab7.iml" />
+    </modules>
+  </component>
+</project>

.idea/vcs.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>

Lab7.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

src/Main.java

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+import java.util.ArrayList;
+import java.util.List;
+
+public class Main {
+    public static void main(String[] args) {
+        List<Uczestnik> uczestnicy = new ArrayList<>();
+
+
+    }
+}

src/Uczestnik.java

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+import java.util.Objects;
+
+public class Uczestnik {
+    int id;
+    String imie;
+    int wiek;
+
+    public Uczestnik(int id, String imie, int wiek) {
+        this.id = id;
+        this.imie = imie;
+        this.wiek = wiek;
+    }
+
+    @Override
+    public String toString() {
+        return "Uczestnik{" +
+                "id=" + id +
+                ", imie='" + imie + '\'' +
+                ", wiek=" + wiek +
+                '}';
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if(this == o) return true;
+        if(!(o instanceof Uczestnik)) return false;
+        Uczestnik uczestnik = (Uczestnik) o;
+        return this.getId() == o.getId() &&
+                this.getImie().equals(o.getImie()) &&
+                this.getWiek() == o.getWiek();
+
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, imie, wiek);
+    }
+}