1 files changed, 54 insertions, 0 deletions
diff --git a/src/com/encrox/automaten/Stapel.java b/src/com/encrox/automaten/Stapel.java
new file mode 100755
index 0000000..a4c5ee9
--- /dev/null
+++ b/src/com/encrox/automaten/Stapel.java
@@ -0,0 +1,54 @@
+
+package com.encrox.automaten;
+
+public class Stapel {
+    
+    Object inhalt;
+    Stapel next;
+    
+    private int zaehlen(){
+        if (next == null) return 0;
+        else return 1+next.zaehlen();
+    }
+    
+    public Stapel(){    
+    }
+    
+    public boolean istLeer(){
+        if (zaehlen()==0) return true;
+        else return false;
+    }
+    
+    public void ablegen(Object i){
+        Stapel element = new Stapel();
+        element.inhalt = i;
+        element.next = next;
+        next = element;
+    }
+    
+    public Object inhaltGeben(){
+        if (next != null) return next.inhalt;
+        else return null;
+    }
+    
+    public Object entnehmen(){
+        if (next != null){
+            Object i = next.inhalt;
+            next = next.next;
+            return i;
+        }
+        return null;
+    }
+    
+    public String ausgeben(){
+        String s="";
+        if (inhalt != null){
+            s = s+inhalt.toString()+"\n";
+        }
+        if (next != null){
+            s = s + next.ausgeben();
+        }
+        return s;
+    }
+    
+}