diff --git a/algorithmen/shakersort.py b/algorithmen/shakersort.py
new file mode 100644
index 0000000..ee38b2e
--- /dev/null
+++ b/algorithmen/shakersort.py
@@ -0,0 +1,31 @@
+l = [12,124,1,31,51,4563,76,43,532,7,98,786,63,68,2,15,764,345,2,7,85]
+l2 = [1235,999,432,123, 12, 5, 70]
+
+def shakersort(unsorted):
+    start = 0
+    end = len(unsorted) - 1 # last possible index of list
+    exchanged = True
+    while exchanged and (end >= start):
+        exchanged = False
+        # Durchlauf vorwärts
+        for i in range(start, end, 1):
+            if unsorted[i] > unsorted[i + 1]:
+                # Vertausche!
+                unsorted[i], unsorted[i + 1] = unsorted[i + 1], unsorted[i]
+                exchanged = True
+                print(unsorted)
+
+        # Durchlauf rückwärts
+        for j in range(end, start, -1):
+            if unsorted[j] < unsorted[j - 1]:
+                # Vertausche!
+                unsorted[j - 1], unsorted[j] = unsorted[j], unsorted[j - 1]
+                exchanged = True
+                print(unsorted)
+
+        end = end - 1
+        start = start + 1
+
+print(str(l2) + " # unsortiert")
+shakersort(l2)
+
diff --git a/automata/recog.py b/automata/recog.py
new file mode 100644
index 0000000..862271d
--- /dev/null
+++ b/automata/recog.py
@@ -0,0 +1,6 @@
+userin=input("Kennwort eingeben: ")
+
+if userin=="abc":
+    print("Passwort akzeptiert.")
+else:
+	print("Authentifizierung fehlgeschlagen.")
diff --git a/automata/simple_automaton.py b/automata/simple_automaton.py
new file mode 100644
index 0000000..b62ef7a
--- /dev/null
+++ b/automata/simple_automaton.py
@@ -0,0 +1,37 @@
+
+states={0:"z1",1:"z2",2:"f"}
+active=True
+activestate=0
+intext=""
+
+print("Alphabet: a, b .")
+print("Im Endzustand beendet '.'")
+
+while active:
+	
+	print("Zustand: " +states.get(activestate))
+	userin = input("Eingabe: ")
+
+	if activestate==0:
+		if userin == "a":
+			activestate=1
+			intext=intext+userin
+		else:
+			pass
+	elif activestate==1:
+		if userin == "b":
+			activestate=2
+			intext=intext+userin
+		else:
+			pass
+	elif activestate==2:
+		if userin == "a":
+			activestate=1
+			intext=intext+userin
+		elif userin == ".":
+			intext=intext+userin
+			active=False
+		else:
+			pass
+
+print("Eingabe " + intext + " akzeptiert.")