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Work on Day2 first star, few open issues

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This commit is contained in:
Bas Grolleman
2025-12-02 09:11:37 +01:00
parent 30693ed069
commit fffa4ea539
5 changed files with 84 additions and 0 deletions
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30
2025/Day2/Day2_first.lua Executable file
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#!/bin/lua
local TotalInvalid = 0
local Input =
"78847-119454,636-933,7143759788-7143793713,9960235-10043487,44480-68595,23468-43311,89-123,785189-1014654,3829443354-3829647366,647009-692765,2-20,30-42,120909-197026,5477469-5677783,9191900808-9191943802,1045643-1169377,46347154-46441299,2349460-2379599,719196-779497,483556-641804,265244-450847,210541-230207,195-275,75702340-75883143,58-84,2152-3237,3367-5895,1552-2029,9575-13844,6048-8966,419388311-419470147,936-1409,9292901468-9292987321"
-- "11-22,95-115,998-1012,1188511880-1188511890,222220-222224,1698522-1698528,446443-446449,38593856-38593862"
--"11-22,95-115,998-1012,1188511880-1188511890,222220-222224,1698522-1698528,446443-446449,38593856-38593862,565653-565659,824824821-824824827,2121212118-2121212124"
local DEBUG = true
for CheckRange in string.gmatch(Input, "([^,]+)") do
local Start, End = CheckRange:match("^(%d+)-(%d+)$")
if DEBUG then
print(Start .. " to " .. End)
end
for Check = Start, End do
if string.len(Check) % 2 == 0 then
local mid = string.len(Check) / 2
local first = string.sub(Check, 1, mid)
local second = string.sub(Check, -mid, -1)
if first == second then
print("Invalid " .. Check)
TotalInvalid = TotalInvalid + Check
end
end
end
end
print("Total Count Invalid IDs " .. TotalInvalid)
-- local diff = 1227775554 - TotalInvalid
-- print("Difference with check " .. diff)

44
2025/Day2/Day2_second.lua Executable file
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#!/bin/lua
local TotalInvalid = 0
local Input =
"11-22,95-115,998-1012,1188511880-1188511890,222220-222224,1698522-1698528,446443-446449,38593856-38593862,565653-565659,824824821-824824827,2121212118-2121212124"
-- Full "78847-119454,636-933,7143759788-7143793713,9960235-10043487,44480-68595,23468-43311,89-123,785189-1014654,3829443354-3829647366,647009-692765,2-20,30-42,120909-197026,5477469-5677783,9191900808-9191943802,1045643-1169377,46347154-46441299,2349460-2379599,719196-779497,483556-641804,265244-450847,210541-230207,195-275,75702340-75883143,58-84,2152-3237,3367-5895,1552-2029,9575-13844,6048-8966,419388311-419470147,936-1409,9292901468-9292987321"
local DEBUG = true
function debug(displaystring)
if DEBUG then
print(displaystring)
end
end
-- TODO Second star, it's not doing the loop for 1 elements
-- TODO Move the self check in function (maybe for cleanup stage)
for CheckRange in string.gmatch(Input, "([^,]+)") do
local Start, End = CheckRange:match("^(%d+)-(%d+)$")
for Check = Start, End do
local valid = true
for L = 1, string.len(Check) / 2 do
if string.len(Check) % L == 0 then
local SingleElement = string.sub(Check, 1, string.len(Check) / L)
-- debug(SingleElement)
local CheckTest = ""
for B = 1, L do
CheckTest = CheckTest .. SingleElement
end
-- debug(" Compare (" .. Check .. ") == (" .. CheckTest .. ")")
if tonumber(Check) == tonumber(CheckTest) then
debug(" Invalid " .. Check)
valid = false
end
end
end
if not valid then
TotalInvalid = TotalInvalid + Check
end
end
end
print("Total Count Invalid IDs " .. TotalInvalid)
local diff = 4174379265 - TotalInvalid
print("Difference with check " .. diff)

1
2025/Day2/full_input Normal file
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78847-119454,636-933,7143759788-7143793713,9960235-10043487,44480-68595,23468-43311,89-123,785189-1014654,3829443354-3829647366,647009-692765,2-20,30-42,120909-197026,5477469-5677783,9191900808-9191943802,1045643-1169377,46347154-46441299,2349460-2379599,719196-779497,483556-641804,265244-450847,210541-230207,195-275,75702340-75883143,58-84,2152-3237,3367-5895,1552-2029,9575-13844,6048-8966,419388311-419470147,936-1409,9292901468-9292987321

1
2025/Day2/test_input Normal file
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11-22,95-115,998-1012,1188511880-1188511890,222220-222224,1698522-1698528,446443-446449,38593856-38593862,565653-565659,824824821-824824827,2121212118-2121212124

8
2025/Lessons.md
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@@ -7,3 +7,11 @@ This is mostly so I can keep notes on my progress, in single markdown format so
1. Read! Oh that brain of mine, skipping half the things and missing things like count clicks not end point dial 1. Read! Oh that brain of mine, skipping half the things and missing things like count clicks not end point dial
2. Setup a proper test, make a smaller input test that you know the answer to to check the code 2. Setup a proper test, make a smaller input test that you know the answer to to check the code
## Lessons second day
1. More git commits!
2. Clear history so you don't accidentally cp day1 to day2 during testing. (Undo FTW)
3. Put the central check (Serial Valid/Invalid) in a function so it's easy to add self checks in the beginning