commit a8ee8bad9992409ad564a2d88035129f0357b531
Author: jaegerfl104085 <jaegerfl10405@th-nuernberg.de>
Date:   Tue Oct 20 16:04:15 2026 +0200

    yo

diff --git a/Prak 1/Substring.py b/Prak 1/Substring.py
new file mode 100644
index 0000000..27cbe60
--- /dev/null
+++ b/Prak 1/Substring.py	
@@ -0,0 +1,26 @@
+"""
+Teilt den String an gewünschter Position und gibt ihn geteilt aus 👌
+"""
+
+def substring(text:str, start:int, length:int|None=None)->str:
+
+    if start < 0 or start > len(text):
+        raise ValueError(f"Invalid position: {start}")
+    #Fehlerausgabe, wenn die Startposition außerhalb des Bereichs der Länge liegt
+
+    if length is not None:
+        if length < 0:
+            raise ValueError(f"Invalid: {length}")
+        #Fehlerausgabe, wenn Länge kleiner 0 ist
+        return text[start: start + length]
+    #Gibt den String ab der Startposition bis zum Ende wieder
+    return text[start:]
+
+
+
+text = "GEEKSFORGEEKS"
+print(substring(text, 5))
+print(substring(text, 0, 5))
+
+
+
diff --git a/apollo.py b/apollo.py
new file mode 100644
index 0000000..7c544c8
--- /dev/null
+++ b/apollo.py
@@ -0,0 +1,71 @@
+import sys
+import pygame
+from moon import Moon
+
+
+class Apollo(Moon):
+    def __init__(self, moon: Moon, distance: float = 40.0, radius: int = 5):
+        # Geschwindigkeit: doppelt so schnell wie der Mond, aber entgegengesetzte Richtung (-2 * moon.speed)
+        speed = -2.0 * moon.speed
+        self.moon = moon
+        # Initialisierung über super(): Farbe rot, kleinerer Radius
+        super().__init__(
+            center=(moon.x, moon.y),
+            distance=distance,
+            speed=speed,
+            radius=radius,
+            color=(255, 0, 0),  # Roter Kreis
+        )
+
+
+    def update_position(self) -> None:
+        """
+        Aktualisiert das dynamische Drehzentrum (Mondposition)
+        und ruft anschließend die Positionsberechnung von Moon auf.
+        """
+        # Drehzentrum ist der aktuelle Mittelpunkt des Mondes
+        self.center = (self.moon.x, self.moon.y)
+
+        # Verwendet die bestehende Logik der Basisklasse Moon
+        super().update_position()
+
+
+def main():
+    pygame.init()
+    screen = pygame.display.set_mode((800, 600))
+    pygame.display.set_caption("Mond- und Apollo-Simulation")
+    clock = pygame.time.Clock()
+
+    earth_pos = (400, 300)
+    moon = Moon(center=earth_pos, distance=180.0, speed=0.015, radius=16)
+    apollo = Apollo(moon=moon, distance=45.0, radius=5)
+
+    running = True
+    while running:
+        for event in pygame.event.get():
+            if event.type == pygame.QUIT:
+                running = False
+
+        # Erst Mond aktualisieren, dann Apollo (da Apollo auf die Mond-Position zugreift)
+        moon.update_position()
+        apollo.update_position()
+
+        # Render-Schritt
+        screen.fill((10, 10, 25))
+
+        # Erde
+        pygame.draw.circle(screen, (40, 120, 230), earth_pos, 40)
+
+        # Mond und Kapsel zeichnen
+        moon.draw(screen)
+        apollo.draw(screen)
+
+        pygame.display.flip()
+        clock.tick(60)
+
+    pygame.quit()
+    sys.exit()
+
+
+if __name__ == "__main__":
+    main()
\ No newline at end of file
diff --git a/compute.py b/compute.py
new file mode 100644
index 0000000..986e66e
--- /dev/null
+++ b/compute.py
@@ -0,0 +1,189 @@
+from collections.abc import Iterable
+
+Number = float | int
+
+
+def _is_square_matrix(matrix: Iterable[Iterable[Number]]) -> bool:
+    """Return True if the supplied iterable is a square matrix.
+
+    A proper matrix must contain at least one row and every row must be
+    the same length, and the number of rows must equal that length.
+    """
+    rows = list(matrix)
+    if not rows:
+        return False
+    row_len = len(rows[0])
+    return all(len(row) == row_len for row in rows) and len(rows) == row_len
+
+
+def _iter_to_list(matrix: Iterable[Iterable[Number]]) -> list[list[Number]]:
+    """Convert the supplied iterable of iterables into a list of lists."""
+    return [list(row) for row in matrix]
+
+
+def transpose(matrix: Iterable[Iterable[Number]]) -> list[list[Number]]:
+    """Return the transpose of a 2D matrix."""
+    rows = _iter_to_list(matrix)
+    if not rows:
+        return []
+
+    row_len = len(rows[0])
+    if not all(len(r) == row_len for r in rows):
+        raise ValueError("All rows must have the same length.")
+
+    return [list(col) for col in zip(*rows)]
+
+
+def rotate(
+    matrix: Iterable[Iterable[Number]], clockwise: bool = True
+) -> list[list[Number]]:
+    """Rotate a 2D matrix by 90 degrees.
+
+    Parameters
+    ----------
+    matrix : Iterable[Iterable[Number]]
+        Input matrix.
+    clockwise : bool, default=True
+        Rotate 90 degrees clockwise if True, counter-clockwise if False.
+
+    Returns
+    -------
+    list[list[Number]]
+        The rotated matrix.
+    """
+    rows = _iter_to_list(matrix)
+    if not rows:
+        return []
+
+    row_len = len(rows[0])
+    if not all(len(r) == row_len for r in rows):
+        raise ValueError("All rows must have the same length.")
+
+    if clockwise:
+        # 90° im Uhrzeigersinn: Zeilen umkehren, dann transponieren
+        return [list(col) for col in zip(*rows[::-1])]
+    else:
+        # 90° gegen den Uhrzeigersinn: transponieren, dann Zeilen umkehren
+        return [list(col) for col in zip(*rows)][::-1]
+
+
+def matmul(a: Iterable[Iterable[Number]], b: Iterable[Iterable[Number]]) -> list[list[Number]]:
+    """Multiply two matrices."""
+    a_rows = _iter_to_list(a)
+    b_rows = _iter_to_list(b)
+
+    # Validate dimensions
+    if not a_rows or not b_rows:
+        raise ValueError("Input matrices cannot be empty.")
+
+    a_cols = len(a_rows[0])
+    b_rows_count = len(b_rows)
+    if a_cols != b_rows_count:
+        raise ValueError(
+            f"Incompatible matrix dimensions: {len(a_rows)}x{a_cols} cannot be "
+            f"multiplied with {b_rows_count}x{len(b_rows[0])}."
+        )
+
+    b_cols = len(b_rows[0])
+
+    if not all(len(row) == a_cols for row in a_rows):
+        raise ValueError("All rows of matrix a must have the same length.")
+    if not all(len(row) == b_cols for row in b_rows):
+        raise ValueError("All rows of matrix b must have the same length.")
+
+    # Skalarprodukt
+    result: list[list[Number]] = []
+    for i in range(len(a_rows)):
+        result_row: list[Number] = []
+        for j in range(b_cols):
+            dot = sum(a_rows[i][k] * b_rows[k][j] for k in range(a_cols))
+            result_row.append(dot)
+        result.append(result_row)
+
+    return result
+
+
+# --- New functionality: rotating a 2D vector (e.g. moon around earth) ---
+
+import math
+
+
+def rotate_vector(vec: list[Number], angle_rad: Number) -> list[Number]:
+    """Return a new 2‑D vector rotated by *angle_rad*.
+    ``vec`` must be a list/tuple of two numbers ``[x, y]``.
+    The rotation is counter‑clockwise and follows the standard
+    rotation matrix:
+    ``[x', y'] = [x cosθ - y sinθ, x sinθ + y cosθ]``.
+    """
+    if len(vec) != 2:
+        raise ValueError("rotate_vector expects a 2‑D vector.")
+    x, y = vec
+    cos_a = math.cos(angle_rad)
+    sin_a = math.sin(angle_rad)
+    return [x * cos_a - y * sin_a, x * sin_a + y * cos_a]
+
+
+def orbit_earth_moon(
+    earth_pos: list[Number],
+    moon_pos: list[Number],
+    angular_speed_rad_per_time: Number,
+    dt: Number,
+) -> tuple[list[Number], list[Number]]:
+    """Rotate *moon_pos* around *earth_pos*.
+
+    Both *earth_pos* and *moon_pos* are ABSOLUTE [x, y] coordinates.
+    The moon is moved by applying a rotation of ``omega * dt`` radians
+    around the Earth. The Earth stays fixed, so repeatedly calling this
+    function makes the moon orbit the Earth on a circle of constant radius.
+
+    Returns the new positions ``(new_earth_pos, new_moon_pos)``.
+    """
+    # Translate moon to origin relative to earth
+    relative = [moon_pos[0] - earth_pos[0], moon_pos[1] - earth_pos[1]]
+    # Rotate the relative vector
+    new_rel = rotate_vector(relative, angular_speed_rad_per_time * dt)
+    # Translate back
+    new_moon = [earth_pos[0] + new_rel[0], earth_pos[1] + new_rel[1]]
+    return earth_pos, new_moon
+
+
+def point_on_circle(
+    center: list[Number], radius: Number, angle_rad: Number
+) -> list[Number]:
+    """Return the absolute [x, y] position on a circle.
+
+    *center* is the absolute center, *radius* the distance from the center
+    and *angle_rad* the angle in radians (0 points to the right,
+    increasing angles rotate counter-clockwise).
+    """
+    return [
+        center[0] + radius * math.cos(angle_rad),
+        center[1] + radius * math.sin(angle_rad),
+    ]
+
+
+if __name__ == "__main__":
+    # Test matmul
+    m1 = [[1, 2], [3, 4]]
+    m2 = [[5, 6], [7, 8]]
+    res1 = matmul(m1, m2)
+    assert res1 == [[19, 22], [43, 50]]
+
+    m3 = [[1, 2, 3], [4, 5, 6]]
+    m4 = [[7, 8], [9, 1], [2, 3]]
+    res2 = matmul(m3, m4)
+    assert res2 == [[31, 19], [85, 55]]
+
+    # Test transposnieren
+    m_square = [[1, 2], [3, 4]]
+    assert transpose(m_square) == [[1, 3], [2, 4]]
+
+    m_rect = [[1, 2, 3], [4, 5, 6]]
+    assert transpose(m_rect) == [[1, 4], [2, 5], [3, 6]]
+
+    # Test rotate mit Uhr
+    assert rotate([[1, 2], [3, 4]]) == [[3, 1], [4, 2]]
+    assert rotate([[1, 2, 3], [4, 5, 6]]) == [[4, 1], [5, 2], [6, 3]]
+
+    # Testf rotate gegen Uhr
+    assert rotate([[1, 2], [3, 4]], clockwise=False) == [[2, 4], [1, 3]]
\ No newline at end of file
diff --git a/game.py b/game.py
new file mode 100644
index 0000000..00c24ae
--- /dev/null
+++ b/game.py
@@ -0,0 +1,58 @@
+import random
+import pygame
+
+class Game:
+
+    SIZE = (500, 500)
+    FPS = 30
+
+    def __init__(self, title="Game", fps=FPS, size=SIZE):
+        self.title = title
+        self.fps = fps
+        self.size = size
+        self.screen = None
+        self.clock = pygame.time.Clock()
+
+    def run(self):
+        self.init_game()
+        self.game_loop()
+        self.exit_game()
+
+    def init_game(self):
+        random.seed()
+        pygame.init()
+        pygame.display.set_caption(self.title)
+        self.set_screen()
+
+    def set_screen(self):
+        if self.screen is None:
+            self.screen = pygame.display.set_mode(self.size)
+            self.screen.fill((0, 0, 0))
+        return self.screen
+
+    def game_loop(self):
+        while True:
+            if not self.event_handling():
+                break
+            if not self.update_game():
+                break
+            self.draw_game()
+            self.clock.tick(self.fps)
+
+    def event_handling(self):
+        for event in pygame.event.get():
+            if event.type == pygame.QUIT:
+                return False
+        keys = pygame.key.get_pressed()
+        # TODO: implement key events
+        return True
+
+    def update_game(self):
+        # TODO: implement game logic
+        return True
+
+    def draw_game(self):
+        pygame.display.flip()
+
+    def exit_game(self):
+        pygame.quit()
\ No newline at end of file
diff --git a/moon.py b/moon.py
new file mode 100644
index 0000000..3d4b3e2
--- /dev/null
+++ b/moon.py
@@ -0,0 +1,85 @@
+import math
+import sys
+import pygame
+
+
+class Moon:
+    def __init__(
+        self,
+        center: tuple[float, float] = (400, 300),
+        distance: float = 180.0,
+        speed: float = 0.02,
+        radius: int = 15,
+        color: tuple[int, int, int] = (200, 200, 200),
+    ):
+        self.center = center          # Drehzentrum (standardmäßig die Erde)
+        self.distance = distance      # Bahnradius
+        self.angle = 0.0              # Aktueller Winkel
+        self.speed = speed            # Winkelgeschwindigkeit
+        self.radius = radius          # Darstellungsradius
+        self.color = color            # Farbe (Mond: grau)
+        self.x = 0.0
+        self.y = 0.0
+        self.update_position()
+
+    def update_angle(self) -> None:
+        """Erhöht den Drehwinkel um die eigene Geschwindigkeit."""
+        self.angle += self.speed
+
+    def compute_relative_position(self) -> tuple[float, float]:
+        """Berechnet die relative Position zum Mittelpunkt über Polar- zu Kartesischen Koordinaten."""
+        dx = self.distance * math.cos(self.angle)
+        dy = self.distance * math.sin(self.angle)
+        return dx, dy
+
+    def update_position(self) -> None:
+        """Setzt die absolute Position basierend auf dem Zentrum und dem relativen Offset."""
+        self.update_angle()
+        dx, dy = self.compute_relative_position()
+        self.x = self.center[0] + dx
+        self.y = self.center[1] + dy
+
+    def draw(self, screen: pygame.Surface) -> None:
+        """Zeichnet das Objekt auf den Bildschirm."""
+        pygame.draw.circle(
+            screen,
+            self.color,
+            (int(self.x), int(self.y)),
+            self.radius,
+        )
+
+
+def main():
+    pygame.init()
+    screen = pygame.display.set_mode((800, 600))
+    pygame.display.set_caption("Mond-Simulation")
+    clock = pygame.time.Clock()
+
+    earth_pos = (400, 300)
+    moon = Moon(center=earth_pos)
+
+    running = True
+    while running:
+        for event in pygame.event.get():
+            if event.type == pygame.QUIT:
+                running = False
+
+        # Aktualisierung
+        moon.update_position()
+
+        # Zeichnen
+        screen.fill((10, 10, 25))  # Weltraum-Hintergrund
+        # Erde zeichnen
+        pygame.draw.circle(screen, (30, 100, 220), earth_pos, 40)
+        # Mond zeichnen
+        moon.draw(screen)
+
+        pygame.display.flip()
+        clock.tick(60)
+
+    pygame.quit()
+    sys.exit()
+
+
+if __name__ == "__main__":
+    main()
\ No newline at end of file
diff --git a/opencode.json b/opencode.json
new file mode 100644
index 0000000..15be39d
--- /dev/null
+++ b/opencode.json
@@ -0,0 +1,16 @@
+{
+  "$schema": "https://opencode.ai/config.json",
+  "provider": {
+    "thn": {
+      "npm": "@ai-sdk/openai-compatible",
+      "options": {
+        "baseURL": "http://141.75.33.244:8000/v1",
+        "apiKey": "sk-QXj1p40XOwNSze_5-eYrBzVh3qIgAfqoWPkAjNVqOS8"
+      },
+      "models": {
+        "gpt-oss:20b": { "name": "GPT-OSS 20B" }
+      }
+    }
+  },
+  "model": "thn/gpt-oss:20b"
+}
\ No newline at end of file
diff --git a/reverse.py b/reverse.py
new file mode 100644
index 0000000..401090c
--- /dev/null
+++ b/reverse.py
@@ -0,0 +1,13 @@
+"""
+Reverse string utility.
+
+This script prompts the user for a string and prints the reversed version.
+"""
+
+def main():
+    user_input = input("Please enter a string to reverse: ")
+    reversed_string = user_input[::-1]
+    print("Reversed string: ", reversed_string)
+
+if __name__ == "__main__":
+    main()