From ed7af558eac238b6fe2d379efba7f6cc2078743f Mon Sep 17 00:00:00 2001
From: Blues44 <julianlautenscheidt@gmail.com>
Date: Tue, 15 Nov 2022 14:51:35 +0100
Subject: [PATCH] Abgabe .py Teile

---
 s1_a4.py    |  9 +++++++++
 s1_a51.py   | 19 +++++++++++++++++++
 s1_a53_6.py | 43 +++++++++++++++++++++++++++++++++++++++++++
 s1_a61_2.py |  6 ++++++
 4 files changed, 77 insertions(+)
 create mode 100644 s1_a4.py
 create mode 100644 s1_a51.py
 create mode 100644 s1_a53_6.py
 create mode 100644 s1_a61_2.py

diff --git a/s1_a4.py b/s1_a4.py
new file mode 100644
index 0000000..246adbc
--- /dev/null
+++ b/s1_a4.py
@@ -0,0 +1,9 @@
+i = 0
+s = 0.0
+while s <= 1.644934:
+    i = i + 1
+    s = s + 1.0 / (i * i)
+    print("Schritt: " + str(i) + ", Wert: " + str(s))
+
+
+#pi^2/6 = 1,644934, wird erreicht nach 14959887 Schritten
\ No newline at end of file
diff --git a/s1_a51.py b/s1_a51.py
new file mode 100644
index 0000000..bf77602
--- /dev/null
+++ b/s1_a51.py
@@ -0,0 +1,19 @@
+# 1a
+matrix_list = [[3, 0, -2, 11], [0, 0, 9, 0], [0, 7, 0, 0], [0, 0, 0, -3]]
+print(matrix_list)
+
+# 1b+c
+matrix_list_general = [[], [], [], []]
+MAX = 4
+for i in range(0, MAX):
+    print("Zeile " + str(i + 1))
+    for j in range(0, MAX):
+        n = int(input("Value:"))
+        matrix_list_general[i].insert(j, n)
+
+print(matrix_list_general)
+
+# 1d
+for i, row in enumerate(matrix_list_general):
+    for j, value in enumerate(row):
+        print(f'a[{i}][{j}] = {value} ')
\ No newline at end of file
diff --git a/s1_a53_6.py b/s1_a53_6.py
new file mode 100644
index 0000000..3861705
--- /dev/null
+++ b/s1_a53_6.py
@@ -0,0 +1,43 @@
+#5_3
+list1 = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+print("start list", list1)
+
+a = list1[9]
+b = list1[8]
+c = list1[7]
+
+list1 = [c] + [b] + [a] + list1
+list1.pop(-1)
+list1.pop(-1)
+list1.pop(-1)
+
+print("new list", list1)
+print()
+print()
+
+#5_4
+#a
+word = "DONAUDAMPFSCHIFFAHRTSGESELLSCHAFTSSTEWARDESS"
+letters = list(word)
+print(letters)
+print("length:", len(letters))
+
+#b
+letters_once = []
+for element in letters:
+    if element not in letters_once:
+        letters_once.append(element)
+
+print(letters_once)
+print("length new:", len(letters_once))
+
+print()
+print()
+
+#5_5
+def sort(list2):
+    list2.sort(key = lambda x: x[1])
+    return list2
+
+list2 = [[1, 2, 3], [2, 1, 3], [4, 0, 1]]
+print(sort(list2))
\ No newline at end of file
diff --git a/s1_a61_2.py b/s1_a61_2.py
new file mode 100644
index 0000000..51b5784
--- /dev/null
+++ b/s1_a61_2.py
@@ -0,0 +1,6 @@
+string = "this is a test"
+replaced = string.replace(' ', '-')
+print(replaced)
+
+string2 = "hello, world"[-7::-1]
+print(string2)
\ No newline at end of file