Abgabe Überarbeitet

s1_a4.py

@@ -1,9 +1,15 @@
-i = 0
+#4.1
-s = 0.0
+import math
-while s <= 1.644934:
+
+z = ((math.pi**2)/6)
+x = "%(z).6f"%{'z':(math.pi**2)/6}
+y = 1.644934
+print(x)
+
+
+i = 1
+sum = 0
+while sum < y:
+    sum = sum + (1 / (i ** 2))
     i = i + 1
-    s = s + 1.0 / (i * i)
+    print("Summe:", sum, ", Schritte: ", i) #Summe: 1.6449340000000012, Schritte: 14959887
-    print("Schritt: " + str(i) + ", Wert: " + str(s))
-
-
-#pi^2/6 = 1,644934, wird erreicht nach 14959887 Schritten

s1_a51.py

@@ -1,8 +1,9 @@
-# 1a
+#5.1
+#a)
 matrix_list = [[3, 0, -2, 11], [0, 0, 9, 0], [0, 7, 0, 0], [0, 0, 0, -3]]
 print(matrix_list)
 
-# 1b+c
+#b+c)
 matrix_list_general = [[], [], [], []]
 MAX = 4
 for i in range(0, MAX):
@@ -13,7 +14,7 @@ for i in range(0, MAX):
 
 print(matrix_list_general)
 
-# 1d
+#d)
 for i, row in enumerate(matrix_list_general):
     for j, value in enumerate(row):
         print(f'a[{i}][{j}] = {value} ')

s1_a53_6.py

@@ -1,21 +1,18 @@
-#5_3
+#5.3
 list1 = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
-print("start list", list1)
+print("start list: ", list1)
 
-a = list1[9]
+list1.insert(0, list1.pop())
-b = list1[8]
+list1.insert(0, list1.pop())
-c = list1[7]
+list1.insert(0, list1.pop())
 
-list1 = [c] + [b] + [a] + list1
+print("new list: ", list1)
-list1.pop(-1)
-list1.pop(-1)
-list1.pop(-1)
-
-print("new list", list1)
 print()
 print()
 
-#5_4
+#---------------------------------------------------------------------------------------------------------
+
+#5.4
 #a
 word = "DONAUDAMPFSCHIFFAHRTSGESELLSCHAFTSSTEWARDESS"
 letters = list(word)
@@ -29,15 +26,27 @@ for element in letters:
         letters_once.append(element)
 
 print(letters_once)
-print("length new:", len(letters_once))
+print("new length:", len(letters_once))
 
 print()
 print()
 
-#5_5
+#---------------------------------------------------------------------------------------------------------
-def sort(list2):
-    list2.sort(key = lambda x: x[1])
-    return list2
 
+#5.5
 list2 = [[1, 2, 3], [2, 1, 3], [4, 0, 1]]
-print(sort(list2))
+print("List2 unsorted:", list2)
+list2.sort(key = lambda list2: list2[1])
+print("List2 sorted by 2nd value:", list2)
+print()
+print()
+#---------------------------------------------------------------------------------------------------------
+
+#5.6
+dict = { "Hund" : "wuff", "Katze" : "miau", "Kuh" : "muuh" }
+def function2(d, a):
+    print(a, ":", d[a])
+
+function2(dict, "Hund")
+function2(dict, "Katze")
+function2(dict, "Kuh")

s1_a61_2.py

@@ -1,6 +1,10 @@
-string = "this is a test"
+#6.
-replaced = string.replace(' ', '-')
+s = "This is a test"
-print(replaced)
+print(s)
 
-string2 = "hello, world"[-7::-1]
+#1.
-print(string2)
+print("Spaces replaced with '-':", s.replace(' ', '-'))
+
+#2.
+s1 = "Hello, World"[-7::-1]
+print(s1)