commit 993b91d67160fe181880739d62ba4b1373c402e9
Author: mittelni <mittelni@localhost>
Date:   Fri Mar 18 12:32:04 2022 +0100

    Start 18.3.2022

diff --git a/Rechner/.classpath b/Rechner/.classpath
new file mode 100644
index 0000000..57bca72
--- /dev/null
+++ b/Rechner/.classpath
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-17">
+		<attributes>
+			<attribute name="module" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>
diff --git a/Rechner/.gitignore b/Rechner/.gitignore
new file mode 100644
index 0000000..ae3c172
--- /dev/null
+++ b/Rechner/.gitignore
@@ -0,0 +1 @@
+/bin/
diff --git a/Rechner/.project b/Rechner/.project
new file mode 100644
index 0000000..0f3914b
--- /dev/null
+++ b/Rechner/.project
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Rechner</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>
diff --git a/Rechner/.settings/org.eclipse.jdt.core.prefs b/Rechner/.settings/org.eclipse.jdt.core.prefs
new file mode 100644
index 0000000..8c9943d
--- /dev/null
+++ b/Rechner/.settings/org.eclipse.jdt.core.prefs
@@ -0,0 +1,14 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=17
+org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
+org.eclipse.jdt.core.compiler.compliance=17
+org.eclipse.jdt.core.compiler.debug.lineNumber=generate
+org.eclipse.jdt.core.compiler.debug.localVariable=generate
+org.eclipse.jdt.core.compiler.debug.sourceFile=generate
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=warning
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=17
diff --git a/Rechner/src/Node.java b/Rechner/src/Node.java
new file mode 100644
index 0000000..6482a56
--- /dev/null
+++ b/Rechner/src/Node.java
@@ -0,0 +1,13 @@
+
+public class Node<X> {
+	
+	public X content;	//Inhalt des Knoten
+	
+	public Node<X> left;	//linker Nachfolger
+	public Node<X> right;	//rechter nachfolger
+	
+	public Node(X _content) {	//Konstruktor
+		this.content = _content;
+	}
+	
+}
diff --git a/Rechner/src/Symbol.java b/Rechner/src/Symbol.java
new file mode 100644
index 0000000..6f7c057
--- /dev/null
+++ b/Rechner/src/Symbol.java
@@ -0,0 +1,18 @@
+
+public class Symbol {
+
+	private String s;
+	
+	public Symbol(String _s) {
+		this.s = _s;
+	}
+	
+	public boolean istMal() {
+		if(this.s == "*") return true;
+		return false; //return s == "*"; geht auch statt if
+	}
+	
+	public boolean istPlus() {
+		return s == "+";
+	}
+}