Solve 2022 day 06

puzzles/solutions/2022/d06/p1.py

@@ -0,0 +1,27 @@
+import sys
+
+
+START_OF_PACKET_MINIMUM_UNIQUE_SEQUENCE_LENGTH = 4
+
+def get_unique_sequence_start_index(datastream: str, minimum_unique_sequence_length:int) -> int:
+    """
+    :param datastream: datastream to process
+    :param minimum_unique_sequence_length: minimum length of a unique sequence
+    :return: start index of the first unique sequence
+    """
+    for index in range(minimum_unique_sequence_length - 1, len(datastream)):
+        sequence = datastream[index - minimum_unique_sequence_length:index]
+        if len(set(sequence)) == minimum_unique_sequence_length:
+            return index
+
+
+def get_answer(input_text: str):
+    """Return how many characters need to be processed before the first start-of-packet marker is detected."""
+    return get_unique_sequence_start_index(input_text, START_OF_PACKET_MINIMUM_UNIQUE_SEQUENCE_LENGTH)
+
+
+if __name__ == "__main__":
+    try:
+        print(get_answer(sys.argv[1]))
+    except IndexError:
+        pass  # Don't crash if no input was passed through command line arguments.

puzzles/solutions/2022/d06/p2.py

@@ -0,0 +1,17 @@
+import sys
+
+import p1
+
+
+START_OF_MESSAGE_MINIMUM_UNIQUE_SEQUENCE_LENGTH = 14
+
+
+def get_answer(input_text: str):
+    """Return how many characters need to be processed before the first start-of-message marker is detected."""
+    return p1.get_unique_sequence_start_index(input_text, START_OF_MESSAGE_MINIMUM_UNIQUE_SEQUENCE_LENGTH)
+
+if __name__ == "__main__":
+    try:
+        print(get_answer(sys.argv[1]))
+    except IndexError:
+        pass  # Don't crash if no input was passed through command line arguments.

puzzles/solutions/2022/d07/p1.py

@@ -0,0 +1,12 @@
+import sys
+
+
+def get_answer(input_text: str):
+    raise NotImplementedError
+
+
+if __name__ == "__main__":
+    try:
+        print(get_answer(sys.argv[1]))
+    except IndexError:
+        pass  # Don't crash if no input was passed through command line arguments.