Part 1: Given a set of registers initialized to 0, interpret a series of instruction of the form:
{register} (inc|dec) {number|register} if {number|register} (<|<=|=|!=|=>|>) {number|register}
What is the largest value in any register?
Part 1: A tree is defined as such:
node (weight) -> child1, child2, ...node (weight)
Where a
nodealways has a weight, but may or may not have child nodes.
What is the name of the root
nodeof the tree (the node without a parent)?
Part 1: Start with
nstacks of different sizes. Take the largest block and distribute its items starting withn+1and looping around. How many iterations of this does it take before you see a state you’ve seen before?
Part 1: Interpret a program made entirely of jump instructions: each instruction is how many steps to jump. Any time you use an instruction to jump, increase the value of that jump by 1 for next time. How many total steps does it take to escape (jump out of bounds)?
Part 1: Given a list of passphrases, count how many contain no duplicate words.
Part 1: Create a grid in a spiral pattern like so:
17 16 15 14 13 18 5 4 3 12 19 6 1 2 11 20 7 8 9 10 21 22 23---> ...Given a specific index, what is the Manhattan Distance from that point to the origin (
1)?
Part 1: The checksum of a list of numbers is the difference between the largest and smallest number in the row. What is the sum of checksums of a file containing many such lists?
Part 1: Given a number, what is the sum of pairs of digits that match (wrapping the last digit around to the first)?
As mentioned in the main post, I’m structuring my solutions a bit differently this year. Rather than repeating the same relatively lengthy header in each function, we’re going to have a few shared files that can be imported or used for every problem.
Part 1: Take the assembunny interpreter from day 12 and add one new instruction (out
x) which transmits the valuex(either an integer or register). Find the lowest value we can initializeato so that theoutput signals form an infinite repeating pattern of0,1,0,1, …