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๐ฝ - 2024 DAY 14 SOLUTIONS - ๐ฝ
(programming.dev)
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Advent of Code is an annual Advent calendar of small programming puzzles for a variety of skill sets and skill levels that can be solved in any programming language you like.
Solution Threads
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console.log('Hello World')
J
Had to actually render output! What is this "user interface" of which you speak?
J doesn't have meaningful identifiers for system interfaces built into the core language because why would you ever do that. It's all routed through the "foreign conjunction"
!:
. There are aliases in the library, likefread
, but if the documentation gives a list of all of them, I haven't found it. We're doing 1980 style system calls by number here.1 !: 2
iswrite()
, sox (1 !: 2) 2
writesx
(which must be a list of characters) tostdout
.(6 !: 3) y
issleep
fory
seconds.It's inefficient to compute, but I looked for low spots in the mean distance between robots to find the pattern for part 2. The magic numbers (11 and 101) were derived by staring at the entire series for a little bit.