#advent-of-code

22 posts

4 Dec 2024 2 min read Medium
🎄Solve Advent of Code 2024 With Me!
Announcing a spoiler-free YouTube video series for Advent of Code 2024 that focuses on how to analyze and approach each puzzle, not just the answers.

#advent-of-code#software-engineering
29 Dec 2023 16 min read Medium
[Day 20] Pulse Propagation // Advent of Code 2023 (Python)
Solving Advent of Code 2023 Day 20 in Python by simulating flip-flop and conjunction modules with classes, then finding the rx button press count with LCM.

#advent-of-code#python
27 Dec 2023 11 min read Medium
[Day 19] Aplenty // Advent of Code 2023 (Python)
Solving Advent of Code 2023 Day 19 in Python: a rule engine that sends machine parts through workflows, then splitting rating ranges to count combinations.

#advent-of-code#python
26 Dec 2023 10 min read Medium
[Day 17] Clumsy Crucible // Advent of Code 2023 (Python)
Solving Advent of Code 2023 Day 17 in Python: a memoized DFS to minimize crucible heat loss, then Dijkstra with a priority queue for the Ultra Crucible.

#advent-of-code#python
26 Dec 2023 9 min read Medium
[Day 18] Lavaduct Lagoon // Advent of Code 2023 (Python)
Solving Advent of Code 2023 Day 18 in Python with the Shoelace formula and Pick's theorem, then scaling up to huge hex-encoded dig plans in Part 2.

#advent-of-code#python
24 Dec 2023 10 min read Medium
[Day 16] The Floor Will Be Lava // Advent of Code 2023 (Python)
Solving Advent of Code 2023 Day 16 in Python: simulating a light beam through mirrors and splitters with BFS, then trying every edge entry point for Part 2.

#advent-of-code#python
23 Dec 2023 12 min read Medium
[Day 15] Lens Library // Advent of Code 2023 (Python)
Solving AoC 2023 Day 15 in Python by implementing the HASH algorithm and then the HASHMAP lens box procedure with Box and Lens classes.

#advent-of-code#python
21 Dec 2023 9 min read Medium
[Day 14] Parabolic Reflector Dish // Advent of Code 2023 (Python)
Solving AoC 2023 Day 14 in Python by tilting rocks on a platform, then detecting the repeating cycle to skip a billion spin cycles in Part Two.

#advent-of-code#python
20 Dec 2023 8 min read Medium
[Day 13] Point of Incidence // Advent of Code 2023 (Python)
Solving AoC 2023 Day 13 in Python by finding mirror lines in ash and rock patterns with a palindrome-style fan out, then handling smudges in Part Two.

#advent-of-code#python
19 Dec 2023 11 min read Medium
[Day 12] Hot Springs // Advent of Code 2023 (Python)
Solving AoC 2023 Day 12 in Python, from brute-force spring arrangement combinations to a cached recursive approach with early pruning for the unfolded records.

#advent-of-code#python
18 Dec 2023 10 min read Medium
[Day 11] Cosmic Expansion // Advent of Code 2023 (Python)
Solving AoC 2023 Day 11 in Python, from an overengineered BFS and A* approach to the simple Manhattan distance trick that handles a million-fold expansion.

#advent-of-code#python
15 Dec 2023 13 min read Medium
[Day 10] Pipe Maze // Advent of Code 2023 (Python)
Solving Advent of Code 2023 Day 10 in Python, finding the pipe loop with a greedy DFS and counting enclosed tiles using the Shoelace formula and Pick's theorem.

#advent-of-code#python
12 Dec 2023 8 min read Medium
[Day 9] Mirage Maintenance // Advent of Code 2023 (Python)
A Python walkthrough of Advent of Code 2023 Day 9: extrapolating the next and previous values of sequences by repeatedly taking differences.

#advent-of-code#python
11 Dec 2023 9 min read Medium
[Day 8] Haunted Wasteland // Advent of Code 2023 (Python)
A Python walkthrough of Advent of Code 2023 Day 8: following left/right instructions through a node network, then using cycle lengths and LCM for Part 2.

#advent-of-code#python
10 Dec 2023 9 min read Medium
[Day 7] Camel Cards // Advent of Code 2023 (Python)
Solving Advent of Code 2023 Day 7 in Python: ranking Camel Cards hands by type and card order with a custom sort key, then treating J as a joker in Part 2.

#advent-of-code#python
7 Dec 2023 8 min read Medium
[Day 6] Wait For It // Advent of Code 2023 (Python)
A Python walkthrough of Advent of Code 2023 Day 6: counting the ways to beat each boat race record by charge time, then solving one big race for Part 2.

#advent-of-code#python
6 Dec 2023 13 min read Medium
[Day 5] If You Give A Seed A Fertilizer// Advent of Code 2023 (Python)
Solving Advent of Code 2023 Day 5 in Python: mapping seeds on demand, then range intersections that beat a 34 minute brute force for seed ranges.

#advent-of-code#python
4 Dec 2023 8 min read Medium
[Day 4] Scratchcards // Advent of Code 2023 (Python)
Solving Advent of Code 2023 Day 4 in Python: scoring scratchcards with 2^(n-1) points, then tracking won copies with a card count repository for Part 2.

#advent-of-code#python
3 Dec 2023 4 min read Medium
[Day 3] Gear Ratios // Advent of Code 2023 (Python)
Solving Advent of Code 2023 Day 3 in Python: finding part numbers adjacent to symbols in an engine schematic grid, then summing gear ratios for Part 2.

#advent-of-code#python
2 Dec 2023 1 min read Medium
[Day 0] Advent of Code 2023
Advent of Code 2023 is here and I am planning to push code daily this time as the problems unfold!

#advent-of-code#python
2 Dec 2023 2 min read Medium
[Day 1] Trebuchet?! // Advent of Code 2023 (Python)
Solving Advent of Code 2023 Day 1 in Python: the first and last digit of each line, then spelled out digits and overlaps like eightwothree.

#advent-of-code#python
2 Dec 2023 3 min read Medium
[Day 2] Cube Conundrum // Advent of Code 2023 (Python)
Solving Advent of Code 2023 Day 2 in Python: parsing cube game records to find possible games, then computing the power of the minimum cube sets for Part 2.

#advent-of-code#python