diff --git a/fakultaet.py b/fakultaet.py
index 5660151..43e5797 100644
--- a/fakultaet.py
+++ b/fakultaet.py
@@ -4,4 +4,11 @@ def fakultaet(n):
     else:
         return n * fakultaet(n - 1)
     
-print(fakultaet(5))
\ No newline at end of file
+def fakultaet_loop(n):
+    f = 1
+
+    for i in range(n, 1, -1):
+        f *= i
+    return f
+print(fakultaet(5))
+print(fakultaet_loop(5))
\ No newline at end of file
diff --git a/lambda_lc_while.py b/lambda_lc_while.py
new file mode 100644
index 0000000..b0d092b
--- /dev/null
+++ b/lambda_lc_while.py
@@ -0,0 +1,75 @@
+li = [1, 3, 2, 6, 7, 3, 4, 3, 2, 5]
+
+# 1.) Gerade Zahlen aus einer Liste extrahieren
+
+# Aufgabe: Eine Liste mit allen geraden Zahlen zurückgeben
+
+# a) for loop
+def even_num_for(li):
+    even_list = []
+    
+    for i in li:
+        if i % 2 == 0:
+            even_list.append(i)
+    return even_list
+
+# b) lambda function with filter
+def even_num_lambda(li):
+    return list(filter(lambda i: i % 2 == 0, li))
+
+# c) list comprehension
+def even_num_list_comprehension(li):
+    return [i for i in li if i % 2 == 0]
+
+# d) while loop
+def even_num_while(li):
+    i = 0
+    even_list = []
+    while i < len(li):
+        if li[i] % 2 == 0:
+            even_list.append(li[i])
+        i += 1
+    return even_list
+
+print(even_num_for(li)) # a)
+print(even_num_lambda(li)) # b)
+print(even_num_list_comprehension(li)) # c)
+print(even_num_while(li)) # d)
+
+# 2.) Elemente umwandeln
+
+# Aufgabe: Alle Elemente der Liste li in den Typ str umwandeln
+
+# a) for loop
+def to_string_for(li):
+    string_list = []
+    for i in li:
+        string_list.append(str(i))
+    return string_list
+
+# b) lambda function
+def to_string_lambda(li):
+    return list(map(lambda i: str(i), li))
+
+# c) lambda function
+def to_string_map(li):
+    return list(map(str, li))
+
+# d) lsit comprehension
+def to_string_list_comprehension(li):
+    return [str(i) for i in li]
+
+# e) lsit comprehension
+def to_string_while(li):
+    i = 0
+    string_list = []
+    while i < len(li):
+        string_list.append(str(li[i]))
+        i += 1
+    return string_list
+
+print(to_string_for(li)) # a)
+print(to_string_lambda(li)) # b)
+print(to_string_map(li)) # c)
+print(to_string_list_comprehension(li)) # d)
+print(to_string_while(li)) # e)
\ No newline at end of file