Using bun as a TypeScript runtime this year.
To run a puzzle, ensure bun is installed and run bun dayX/index.ts
Started a little tougher on part 2 than I was hoping for 😂. I really wanted to use regex for this (it felt right), but it got a little tricky when the written out versions of the numbers could overlap. Eg. eightwo needs to be 8 when searching from the front and 2 when searching from the back. I ended up doing a lot of ugly string reversing but we got the answer and I'm going to leave the code as-is. Waking up early and going straight to the computer. Feels like the holidays.
A very verbose approach but it was fun to create an appropriate data structure for a Game. This made part 2 pretty easy as well. Didn't solve either part in O(n) but whatevs. Was nice to get both answers right on the first try. The power of organizing the data right. Also learned a little more about how JavaScript regex matching works.
Did not do this one on actual day 3, but it was fun! Tested a bit of regex skills, tried to be smart about runtime complexity while parsing 2d arrays. React has tended to make me program in a way more functional way (no variables, use functional array methods like .map) but it was refreshing to go back to using some for loops and pushing to a solution array.
Part 1 was frustrating because my string split was caused "" to result in extra winning numbers. It took me very long to do part 2 mainly because I was distracted by the TV. Okay problem, thought I was going to have to do some recursion or "while copies exists" logic but since winning numbers only resulted in copies futher down the list you could do this linearly.