Advent of Code: Day 8

2015-12-08

Part 1: Given an escaped string of the form "\xa8br\x8bjr\"", convert it to the escaped form: br js. Calculate the total difference of lengths between the former (16) and the latter (5).

Advent of Code: Day 7

2015-12-07

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Part 1: Given a list of definitions of the form 123 -> x, NOT e -> f, and x AND y -> z, with possible operations NOT, AND, OR, LSHIFT, and RSHIFT, find the value of a. Assume all values are 16-bit integers.

Advent of Code: Day 6

2015-12-06

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Part 1: Given a 1000 by 1000 grid of lights and a list of instructions of the form (turn on|turn off|toggle) 5,10 through 15,20, determine how many lights are on.

Advent of Code: Day 5

2015-12-05

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Part 1: A ’nice’ string contains at least three vowels, one double letter (such as xx), and none of the strings ab, cd, pq, or xy. Count nice strings.

Advent of Code: Day 4

2015-12-04

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Part 1: Mine Adventcoins. Basically, find the lowest integer such that the string {prefix}{integer} has an md5 hash with at least 5 leading zeros. ¹²³

Advent of Code: Day 3

2015-12-03

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Part 1: Given a string of <>^v characters which mean move west, east, north, or south respectively and starting at the origin, how many unique positions do you pass through?

Advent of Code: Day 2

2015-12-02

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Part 1: A gift requires enough wrapping paper to cover the surface plus an additional amount equal to the area smallest side. Calculate the total wrapping paper needed for a list of dimensions of the form 2x3x4.

Advent of Code: Day 1

2015-12-01

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Part 1: Given a string of () characters controlling a simulated elevator, where ( means ‘go up’ and ) means ‘go down’, what floor do you end up on?

Advent of Code

2015-12-01

I’m always on the lookout for new sources of quick¹ coding puzzles. This holiday season, Advent of Code scratches precisely that itch.

Advent of Code is a series of small programming puzzles for a variety of skill levels. They are self-contained and are just as appropriate for an expert who wants to stay sharp as they are for a beginner who is just learning to code. Each puzzle calls upon different skills and has two parts that build on a theme. – About - Advent of Code

I’ve been working out each problem thus far in Python (my language of choice; along with Racket). I’m backfilling the first seven posts (along with this one), but I’ll try to do the rest daily.