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Advent of Code 2015, Day 8: Matchsticks

Jan 20, 2024 · 4 min read · Puzzle Part One: Space on the sleigh is limited this year, and so Santa will be bringing his list as a digital copy. He needs to know how much space it will take up when stored. It is common in many programming languages to provide a way to escapespe...

Advent of Code 2015, Day 7: Some Assembly Required

Dec 20, 2023 · 5 min read · Puzzle Part One: This year, Santa brought little Bobby Tables a set of wires and bitwise logic gates! Unfortunately, little Bobby is a little under the recommended age range, and he needs help assembling the circuit. Each wire has an identifier (some...

Advent of Code 2015, Day 6: Probably a Fire Hazard

Dec 15, 2023 · 6 min read · Puzzle Part One: Because your neighbors keep defeating you in the holiday house decorating contest year after year, you've decided to deploy one million lights in a 1000x1000 grid. Furthermore, because you've been especially nice this year, Santa has...

Advent of Code 2015, Day 5: Doesn't He Have Intern-Elves For This?

Dec 12, 2023 · 6 min read · Puzzle Part One Santa needs help figuring out which strings in his text file are naughty or nice. A nice string is one with all of the following properties: It contains at least three vowels (aeiou only), like aei, xazegov, or aeiouaeiouaeiou. It c...

Advent of Code 2015, Day 4: The Ideal Stocking Stuffer

Dec 11, 2023 · 2 min read · Puzzle, Part One: Santa needs help mining some AdventCoins (very similar to bitcoins) to use as gifts for all the economically forward-thinking little girls and boys. To do this, he needs to find MD5 hashes which, in hexadecimal, start with at least ...