black formatter

3/rucksack.py

@@ -3,42 +3,58 @@ import string
 from aocd.models import Puzzle
 from aocd import submit
 
-def eval_priority(rucksack: str) -> int:
-    '''
-        evaluates the priority of a duplicate item
-    '''
+# create a map of priority values
+priorities = dict(zip(string.ascii_letters, range(1, 53)))
 
-    # create a map of priority values
-    priorities = dict(zip(string.ascii_letters, range(1,53)))
+
+def eval_item_priority(rucksack: str) -> int:
+    """
+    evaluates the priority of a common item
+    """
 
     # slize rucksack into compartments
     size = len(rucksack)
-    a,b = rucksack[:size//2], rucksack[size//2:]
+    a, b = rucksack[: size // 2], rucksack[size // 2 :]
 
-    # find the duplicate item
-    duplicate = ''.join(
-        set(a).intersection(b)
-    )
+    # find the common item
+    common = "".join(set(a).intersection(b))
 
     # return the priority
-    return priorities[duplicate]
+    return priorities[common]
+
+
+def eval_badge_priority(rucksacks: list) -> int:
+    """
+    evaluate the priority of duplicate items over groups of three rucksacks
+    """
+
+    # find common item amongst three sets
+    common = "".join(set(rucksacks[0]) & set(rucksacks[1]) & set(rucksacks[2]))
+
+    # convert to priority list
+    return priorities[common]
+
 
 def parse_input(data: list) -> list:
-    '''
-        parses the input data and generates a list
-    '''
-    # split move set into a list of rounds
-    return [ move for move in data.split('\n')]
+    """
+    parses the input data and generates a list
+    """
+    # split rucksack set into a list
+    return [rucksack for rucksack in data.split("\n")]
+
 
 if __name__ == "__main__":
     # get puzzle and parse data
     puzzle = Puzzle(year=2022, day=3)
     supplies = parse_input(puzzle.input_data)
 
-    # part a: determine the priority of all duplicate items
-    answer = sum([eval_priority(rucksack) for rucksack in supplies])
-    print(f'sum of priorities of all duplicate items: {answer}')
-    submit(answer, part='a', day=3, year=2022)
+    # part a: determine the priority of dupplicate items in compartments
+    answer_a = sum([eval_item_priority(rucksack) for rucksack in supplies])
+    print(f"sum of priorities of all common items amongst compartments: {answer_a}")
+    submit(answer_a, part="a", day=3, year=2022)
 
-    # part b:
-    #submit(total, part='b', day=3, year=2022)
+    # part b: determine the priority of common items in groups of three and create a priority summary
+    groups = [supplies[i : i + 3] for i in range(0, len(supplies), 3)]
+    answer_b = sum([eval_badge_priority(group) for group in groups])
+    print(f"sum of priorities of all common items amongst groups of three: {answer_b}")
+    submit(answer_b, part="b", day=3, year=2022)

4/cleanup.py

@@ -0,0 +1,56 @@
+from aocd.models import Puzzle
+from aocd import submit
+
+
+def find_overlaps(sets: list) -> int:
+    """
+    count the number of sets that overlap
+    """
+    # generate a list where ones correlate to intersecting pairs
+    overlaps = [1 if set.intersection(*pair) else 0 for pair in sets]
+    return sum(overlaps)
+
+
+def find_subsets(sets: list) -> int:
+    """
+    count the number of sets that fully contain each other
+    """
+    # generate a list where ones correlate to subsets of a and b
+    subsets = [
+        1 if pair[0].issubset(pair[1]) or pair[1].issubset(pair[0]) else 0
+        for pair in sets
+    ]
+    return sum(subsets)
+
+
+def parse_input(data: list) -> list:
+    """
+    parses the input data and generates a list of set tuples
+    """
+    # get a list of section pairs
+    sections = [sections.split(",") for sections in data.split("\n")]
+
+    # generate a list of section pairs with sets of discrete ranges
+    sets = list()
+    for pair in sections:
+        a, b = pair[0].split("-")
+        c, d = pair[1].split("-")
+        a, b, c, d = int(a), int(b), int(c), int(d)
+        sets.append([set(range(a, b + 1)), set(range(c, d + 1))])
+    return sets
+
+
+if __name__ == "__main__":
+    # get puzzle and parse data
+    puzzle = Puzzle(year=2022, day=4)
+    sections = parse_input(puzzle.input_data)
+
+    # part a: find the number of sections that fully contain each other
+    answer_a = find_subsets(sections)
+    print(f"sum of all cleanup sections that fully contain each other: {answer_a}")
+    submit(answer_a, part="a", day=4, year=2022)
+
+    # part b: determine the priority of common items in groups of three and create a priority summary
+    answer_b = find_overlaps(sections)
+    print(f"sum of all cleanup section that intersect: {answer_b}")
+    submit(answer_b, part="b", day=4, year=2022)

5/supplystacks.py

@@ -0,0 +1,76 @@
+from copy import deepcopy
+from aocd.models import Puzzle
+from aocd import submit
+
+
+def crate_mover_9000(stacks: dict, moves: list) -> str:
+    """
+    execute moves on the stacks and return the top of each stack
+    the crate mover 9000 only moves single crates.
+    """
+    # take a deep copy so embedded list do not get messed up
+    stacks = deepcopy(stacks)
+    # for each move, execute on stacks
+    for amount, index, dest in moves:
+        for i in range(amount):
+            stacks[dest].append(stacks[index].pop())
+    # take the last element fom each stack and append to output
+    return "".join([stack[-1] for stack in stacks.values()])
+
+
+def crate_mover_9001(stacks: dict, moves: list) -> str:
+    """
+    execute moves on the stacks and return the top of each stack
+    the crate mover 9001 moves stacks of crates.
+    """
+    # take a deep copy so embedded list do not get messed up
+    stacks = deepcopy(stacks)
+    # for each move, move amount of crates from index to dest
+    for amount, index, dest in moves:
+        stacks[dest].extend(stacks[index][-amount:])
+        stacks[index] = stacks[index][:-amount]
+    # take the last element fom each stack and append to output
+    return "".join([stack[-1] for stack in stacks.values()])
+
+
+def parse_input(data: list) -> list:
+    """
+    turn input data into usable data types:
+        stacks_str -> dict of moves {'index':['A','B','C']}
+        moves_str -> list of opeations [amount, index, dest]
+    """
+    # get input data
+    stacks_str, moves_str = data.split("\n\n")
+    # transpose field for easier parsing (thx linalg course)
+    transposed_stacks = list(map(list, zip(*stacks_str.splitlines())))
+    # parse stacks
+    stacks = {}
+    for line in transposed_stacks[1::4]:
+        stack = [c for c in line if c != " "]
+        key = stack.pop()
+        stack.reverse()
+        stacks[key] = stack
+    # parse moves
+    moves = []
+    for move in moves_str.splitlines():
+        _, amount, _, index, _, dest = move.split(" ")
+        # print(f'move {amount} from {index} to {dest}')
+        moves.append((int(amount), index, dest))
+    # return parsed data
+    return stacks, moves
+
+
+if __name__ == "__main__":
+    # get puzzle and parse data
+    puzzle = Puzzle(year=2022, day=5)
+    stacks, moves = parse_input(puzzle.input_data)
+
+    # part a:
+    answer_a = crate_mover_9000(stacks, moves)
+    print(f"{answer_a}")
+    submit(answer_a, part="a", day=5, year=2022)
+
+    # part b:
+    answer_b = crate_mover_9001(stacks, moves)
+    print(f"{answer_b}")
+    submit(answer_b, part="b", day=5, year=2022)

6/tuningtrouble.py

@@ -0,0 +1,29 @@
+from aocd.models import Puzzle
+from aocd import submit
+
+
+def get_marker_pos(signal: str, N: int) -> int:
+    """
+    iterate over input signal and find the first occurence
+    where the set from i to i+N equals N. This means there
+    are no duplicates within this particular range.
+    """
+    for i in range(0, len(signal)):
+        if len(set(signal[i : i + N])) == N:
+            return i + N
+
+
+if __name__ == "__main__":
+    # get puzzle and parse data
+    puzzle = Puzzle(year=2022, day=6)
+    signal = puzzle.input_data
+
+    # part a: find marker with 4 different chars
+    answer_a = get_marker_pos(signal, 4)
+    print(f"{answer_a}")
+    submit(answer_a, part="a", day=6, year=2022)
+
+    # part b: find marker with 14 different chars
+    answer_b = get_marker_pos(signal, 14)
+    print(f"{answer_b}")
+    submit(answer_b, part="b", day=6, year=2022)

7/nospaceleft.py

@@ -0,0 +1,71 @@
+from aocd.models import Puzzle
+from aocd import submit
+
+
+def get_sizes_a(dirs: dict, max_size: int) -> int:
+    """
+    return the size of all dirs which are at most max_size big
+    """
+    filtered_dirs = [value for value in dirs.values() if value < max_size]
+    return sum(filtered_dirs)
+
+
+def get_sizes_b(dirs: dict, needed_size: int) -> int:
+    """
+    return the smallest size of a dir which when deleted amounts
+    to the needed size of 30M.
+    """
+    total_size = 70000000
+    used_size = dirs[("/",)]
+    max_free = needed_size - (total_size - used_size)
+    filtered_dirs = [value for value in dirs.values() if value > max_free]
+    return min(filtered_dirs)
+
+
+def parse_input(input_str: str) -> list:
+    """
+    the input string consists of the following four message types
+    - $ cd ..               -> pop dir name from stack
+    - $ cd [dir]            -> push dir name to stack
+    - $ ls                  -> ignore
+    - dir [dir]             -> ignore
+    - [size] [file]         -> sum up the sizes of all files in this dir
+    parsing is done by implementing a state machine which gathers all
+    available information in the following dictionary.
+    - {list['/','dir','path']:int(size_sum)}
+    """
+    path = list()
+    dirs = dict()
+    for line in input_str.splitlines():
+        match line.split():
+            case ("$", "cd", ".."):
+                path.pop()
+            case ("$", "cd", name):
+                path.append(name)
+            case ("$", "ls"):
+                continue
+            case ("dir", _):
+                continue
+            case (size, file):
+                size = int(size)
+                for i in range(len(path)):
+                    key = tuple(path[: i + 1])  # list not hashable
+                    dirs.setdefault(key, 0)  # initialize key for += to work
+                    dirs[key] += size  # dirs needs to be initialized
+    return dirs
+
+
+if __name__ == "__main__":
+    # get puzzle and parse data
+    puzzle = Puzzle(year=2022, day=7)
+    dirs = parse_input(puzzle.input_data)
+
+    # part a: get the sum of all dirs where the size is at most 100k
+    answer_a = get_sizes_a(dirs, 100000)
+    print(f"{answer_a}")
+    submit(answer_a, part="a", day=7, year=2022)
+
+    # part b: find the smallest D (huehue) that will free up at least 30M
+    answer_b = get_sizes_b(dirs, 30000000)
+    print(f"{answer_b}")
+    submit(answer_b, part="b", day=7, year=2022)

Pipfile

@@ -0,0 +1,11 @@
+[[source]]
+url = "https://pypi.org/simple"
+verify_ssl = true
+name = "pypi"
+
+[packages]
+advent-of-code-data = "*"
+black = "*"
+
+[requires]
+python_version = ">=3.10"

Pipfile.lock

@@ -0,0 +1,141 @@
+{
+    "_meta": {
+        "hash": {
+            "sha256": "75e5e305a53ca8155d7ed18e6d764f46789d737487f9bea8f0891f6a56726e8d"
+        },
+        "pipfile-spec": 6,
+        "requires": {
+            "python_version": "3.11"
+        },
+        "sources": [
+            {
+                "name": "pypi",
+                "url": "https://pypi.org/simple",
+                "verify_ssl": true
+            }
+        ]
+    },
+    "default": {
+        "advent-of-code-data": {
+            "hashes": [
+                "sha256:552e7886c193c52cac71f14ef55c5d7cc1c7ebd0e9e2271be37b01df739f92cc",
+                "sha256:823be87d393b4cd9eef7dc123fdf1078c979b6ad898d8c54bc7b95ff10582209"
+            ],
+            "index": "pypi",
+            "version": "==1.3.1"
+        },
+        "beautifulsoup4": {
+            "hashes": [
+                "sha256:58d5c3d29f5a36ffeb94f02f0d786cd53014cf9b3b3951d42e0080d8a9498d30",
+                "sha256:ad9aa55b65ef2808eb405f46cf74df7fcb7044d5cbc26487f96eb2ef2e436693"
+            ],
+            "markers": "python_full_version >= '3.6.0'",
+            "version": "==4.11.1"
+        },
+        "certifi": {
+            "hashes": [
+                "sha256:0d9c601124e5a6ba9712dbc60d9c53c21e34f5f641fe83002317394311bdce14",
+                "sha256:90c1a32f1d68f940488354e36370f6cca89f0f106db09518524c88d6ed83f382"
+            ],
+            "markers": "python_version >= '3.6'",
+            "version": "==2022.9.24"
+        },
+        "charset-normalizer": {
+            "hashes": [
+                "sha256:5a3d016c7c547f69d6f81fb0db9449ce888b418b5b9952cc5e6e66843e9dd845",
+                "sha256:83e9a75d1911279afd89352c68b45348559d1fc0506b054b346651b5e7fee29f"
+            ],
+            "markers": "python_full_version >= '3.6.0'",
+            "version": "==2.1.1"
+        },
+        "idna": {
+            "hashes": [
+                "sha256:814f528e8dead7d329833b91c5faa87d60bf71824cd12a7530b5526063d02cb4",
+                "sha256:90b77e79eaa3eba6de819a0c442c0b4ceefc341a7a2ab77d7562bf49f425c5c2"
+            ],
+            "markers": "python_version >= '3.5'",
+            "version": "==3.4"
+        },
+        "pebble": {
+            "hashes": [
+                "sha256:8274aa0959f387b368ede47666129cbe5d123f276a1bd9cafe77e020194b2141",
+                "sha256:bdcfd9ea7e0aedb895b204177c19e6d6543d9962f4e3402ebab2175004863da8"
+            ],
+            "markers": "python_version >= '3.6'",
+            "version": "==5.0.3"
+        },
+        "python-dateutil": {
+            "hashes": [
+                "sha256:0123cacc1627ae19ddf3c27a5de5bd67ee4586fbdd6440d9748f8abb483d3e86",
+                "sha256:961d03dc3453ebbc59dbdea9e4e11c5651520a876d0f4db161e8674aae935da9"
+            ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2'",
+            "version": "==2.8.2"
+        },
+        "pytz-deprecation-shim": {
+            "hashes": [
+                "sha256:8314c9692a636c8eb3bda879b9f119e350e93223ae83e70e80c31675a0fdc1a6",
+                "sha256:af097bae1b616dde5c5744441e2ddc69e74dfdcb0c263129610d85b87445a59d"
+            ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4, 3.5'",
+            "version": "==0.1.0.post0"
+        },
+        "requests": {
+            "hashes": [
+                "sha256:7c5599b102feddaa661c826c56ab4fee28bfd17f5abca1ebbe3e7f19d7c97983",
+                "sha256:8fefa2a1a1365bf5520aac41836fbee479da67864514bdb821f31ce07ce65349"
+            ],
+            "markers": "python_version >= '3.7' and python_version < '4'",
+            "version": "==2.28.1"
+        },
+        "six": {
+            "hashes": [
+                "sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926",
+                "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254"
+            ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2'",
+            "version": "==1.16.0"
+        },
+        "soupsieve": {
+            "hashes": [
+                "sha256:3b2503d3c7084a42b1ebd08116e5f81aadfaea95863628c80a3b774a11b7c759",
+                "sha256:fc53893b3da2c33de295667a0e19f078c14bf86544af307354de5fcf12a3f30d"
+            ],
+            "markers": "python_version >= '3.6'",
+            "version": "==2.3.2.post1"
+        },
+        "termcolor": {
+            "hashes": [
+                "sha256:67cee2009adc6449c650f6bcf3bdeed00c8ba53a8cda5362733c53e0a39fb70b",
+                "sha256:fa852e957f97252205e105dd55bbc23b419a70fec0085708fc0515e399f304fd"
+            ],
+            "markers": "python_version >= '3.7'",
+            "version": "==2.1.1"
+        },
+        "tzdata": {
+            "hashes": [
+                "sha256:2b88858b0e3120792a3c0635c23daf36a7d7eeeca657c323da299d2094402a0d",
+                "sha256:fe5f866eddd8b96e9fcba978f8e503c909b19ea7efda11e52e39494bad3a7bfa"
+            ],
+            "markers": "python_version >= '3.6'",
+            "version": "==2022.7"
+        },
+        "tzlocal": {
+            "hashes": [
+                "sha256:89885494684c929d9191c57aa27502afc87a579be5cdd3225c77c463ea043745",
+                "sha256:ee5842fa3a795f023514ac2d801c4a81d1743bbe642e3940143326b3a00addd7"
+            ],
+            "markers": "python_version >= '3.6'",
+            "version": "==4.2"
+        },
+        "urllib3": {
+            "hashes": [
+                "sha256:47cc05d99aaa09c9e72ed5809b60e7ba354e64b59c9c173ac3018642d8bb41fc",
+                "sha256:c083dd0dce68dbfbe1129d5271cb90f9447dea7d52097c6e0126120c521ddea8"
+            ],
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4, 3.5'",
+            "version": "==1.26.13"
+        }
+    },
+    "develop": {}
+}

README.md

@@ -13,8 +13,16 @@ Solutions for the advent of code 2022
 - After a successful login extract your session token from your browser
 - Create a `.env` file and make sure to export the environment variable below
 - The lib will outomatically work if the environment variable is present
+- `Pipenv` automatically loads `.env` files
 
 ```bash
 $ cat .env
 export AOC_SESSION="53616c..."
 ```
+
+## how to get a pipenv shell
+
+```bash
+$ pipenv install
+$ pipenv shell
+```

requirements.txt

@@ -1 +0,0 @@
-advent-of-code-data