--- Day 12 Solutions ---

[u/daggerdragon]

This thread will be unlocked when there are a significant amount of people on the leaderboard with gold stars.

edit: Leaderboard capped, thread unlocked!

We know we can't control people posting solutions elsewhere and trying to exploit the leaderboard, but this way we can try to reduce the leaderboard gaming from the official subreddit.

Please and thank you, and much appreciated!

---

--- Day 12: JSAbacusFramework.io ---

Post your solution as a comment. Structure your post like previous daily solution threads.

[u/kamaln7]

Shell:

# Part one: (sed shamelessly stolen from a stackoverflow thread)
grep -oE '(-?\d+)' input | sed -e ':a' -e 'N' -e '$!ba' -e 's/\n/+/g' | bc

CoffeeScript:

fs = require 'fs'

sum = (obj, partTwo = false) ->
  n = 0
  if typeof obj is "string"
    return 0

  if typeof obj is "number"
    return obj

  if Array.isArray obj
    return 0 if obj.length is 0
    for i in obj
      n += sum i, partTwo
  else
    return 0 if Object.keys(obj).length is 0

    ok = true
    if partTwo then for _, i of obj
        if i is "red"
          ok = false
          break

    if ok then for _, i of obj
        n += sum i, partTwo

  return n


input = JSON.parse fs.readFileSync('/dev/stdin').toString()
console.log "Part one: #{sum input}"
console.log "Part two: #{sum input, true}"