aaa

untitled/.gitignore

@@ -0,0 +1,29 @@
+### 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

untitled/.idea/.gitignore

@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

untitled/.idea/misc.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_20" default="true" project-jdk-name="20" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

untitled/.idea/modules.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/untitled.iml" filepath="$PROJECT_DIR$/untitled.iml" />
+    </modules>
+  </component>
+</project>

untitled/.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
+  </component>
+</project>

untitled/src/Main.java

@@ -0,0 +1,8 @@
+// Press Shift twice to open the Search Everywhere dialog and type `show whitespaces`,
+// then press Enter. You can now see whitespace characters in your code.
+public class Main {
+    public static void main(String[] args) {
+
+        
+    }
+}

untitled/src/StopUhr.java

@@ -0,0 +1,19 @@
+public class StopUhr
+{
+	private long startTime, stopTime;
+
+	public void start()
+	{
+		startTime = System.nanoTime();
+	}
+
+	public void stop()
+	{
+		stopTime = System.nanoTime();
+	}
+
+	public long getDuration()
+	{
+		return stopTime - startTime;
+	}
+}

untitled/src/Zeitmessung.java

@@ -0,0 +1,67 @@
+public class Zeitmessung
+{
+	static int tuWasCounter = 0;
+	private static double tuwas()
+	{
+		tuWasCounter++;
+		return Math.random();
+	}
+
+	// Linear
+	public static double func1(int n)
+	{
+		double summe = 0;
+
+		for (int a = 0; a < n; a++)
+			summe += tuwas();
+
+		return summe;
+	}
+
+	// Quadratisch
+	public static double func2(int n)
+	{
+		double summe = 0;
+
+		for (int a = 0; a < n; a++)
+			for(int b = 0; b < n; b++)
+				summe += tuwas();
+
+		return summe;
+	}
+
+	// log2(n)
+	public static double func6(int n)
+	{
+		double summe = 0;
+
+		while (n > 0)
+		{
+			summe += tuwas();
+			n /= 2;
+		}
+
+		return summe;
+	}
+
+	public static void main(String[] args)
+	{
+		StopUhr uhr = new StopUhr();
+		final int n = 100000;
+		tuWasCounter = 0;
+		uhr.start();
+		func1(n);
+		uhr.stop();
+		System.out.println("func1 "+"n="+n+" Zeit:"+uhr.getDuration()+" tuWasCounter:" + tuWasCounter);
+		tuWasCounter = 0;
+		uhr.start();
+		func2(n);
+		uhr.stop();
+		System.out.println("func2 "+"n="+n+" Zeit:"+uhr.getDuration()+" tuWasCounter:" + tuWasCounter);
+		tuWasCounter = 0;
+		uhr.start();
+		func6(n);
+		uhr.stop();
+		System.out.println("func6 "+"n="+n+" Zeit:"+uhr.getDuration()+" tuWasCounter:" + tuWasCounter);
+	}
+}

untitled/untitled.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>