Keep top level comments as only solutions, if you want to say something other than a solution put it in a new post. (replies to comments can be whatever)
Code block support is not fully rolled out yet but likely will be in the middle of the event. Try to share solutions as both code blocks and using something such as https://topaz.github.io/paste/ or pastebin (code blocks to future proof it for when 0.19 comes out and since code blocks currently function in some apps and some instances as well if they are running a 0.19 beta)
Is there a leaderboard for the community?: We have a programming.dev leaderboard with the info on how to join in this post: https://programming.dev/post/6631465
🔒This post will be unlocked when there is a decent amount of submissions on the leaderboard to avoid cheating for top spots
-- SPDX-FileCopyrightText: 2023 Jummit
--
-- SPDX-License-Identifier: GPL-3.0-or-later
local function nums(str)
local res = {}
for num in str:gmatch("%d+") do
res[num] = true
end
return res
end
local cards = {}
local points = 0
for line in io.open("4.input"):lines() do
local winning, have = line:match("Card%s*%d+: (.*) | (.*)")
winning = nums(winning)
have = nums(have)
local first = true
local score = 0
local matching = 0
for num in pairs(have) do
if winning[num] then
matching = matching + 1
if first then
first = false
score = score + 1
else
score = score * 2
end
end
end
points = points + score
table.insert(cards, {have=have, wins=matching, count=1})
end
print(points)
local cardSum = 0
for i, card in ipairs(cards) do
cardSum = cardSum + card.count
for n = i + 1, i + card.wins do
cards[n].count = cards[n].count + card.count
end
end
print(cardSum)