Day5 Second puzzle

2025/'

@@ -0,0 +1,2 @@
+-- Using Autorun now
+print("Starting Day 5...")

2025/Day3/Day3_second.lua

@@ -10,51 +10,31 @@ function debug(msg)
 end
 
 function MaxJolt(Battery, Size)
-	-- TODO - This going to be a rework, I need to loop 12 times
+	debug("Staring Battery Check [" .. Battery .. "] Size [" .. Size .. "]")
-	local BatteryDigits = {}
+
-	for I = 1, tonumber(Size) do
+	-- Load Battery into Array
-		BatteryDigits[I] = 0
+	local BatteryTable = {}
+	local BatterySize = string.len(Battery)
+	for Cell in Battery:gmatch(".") do
+		table.insert(BatteryTable, tonumber(Cell))
 	end
 
-	-- lastdigit = tonumber(string.sub(Battery, -1))
+	local Digits = {}
-	-- debug("lastdigit " .. lastdigit)
+	local Start = 1
-	--
+
-	-- BatteryNoLast = string.sub(Battery, 0, -2)
+	-- Outer loop for Digits
-	-- BatteryNoLast:gsub(".", function(c)
-	-- 	table.insert(b, c)
-	-- 	return c
-	-- end)
-	--
-	-- for key, value in pairs(b) do
-	-- 	checkdigit = tonumber(value)
-	-- 	if firstdigit < checkdigit then
-	-- 		firstdigit = checkdigit
-	-- 	end
-	-- end
-	--
-	-- local passedfirst = false
-	-- for key, value in pairs(b) do
-	-- 	checkdigit = tonumber(value)
-	-- 	if passedfirst and seconddigit < checkdigit then
-	-- 		seconddigit = checkdigit
-	-- 	end
-	-- 	if checkdigit == firstdigit then
-	-- 		passedfirst = true
-	-- 	end
-	-- end
-	--
-	-- if seconddigit < lastdigit then
-	-- 	seconddigit = lastdigit
-	-- end
-	--
-	-- debug("First " .. firstdigit)
-	-- debug("Second " .. seconddigit)
-	-- return tostring(firstdigit) .. tostring(seconddigit)
-	local BatteryString = ""
 	for I = 1, tonumber(Size) do
-		BatteryString = BatteryString .. tostring(BatteryDigits[I])
+		debug("Checking digits " .. Start .. " till " .. (BatterySize - (Size - I)))
+		Digits[I] = 0
+		for Check = Start, BatterySize - (Size - I) do
+			if Digits[I] < BatteryTable[Check] then
+				Digits[I] = BatteryTable[Check]
+				Start = Check + 1
+			end
+		end
 	end
-	return BatteryString
+
+	return table.concat(Digits)
 end
 
 function TestMaxJolt(Battery, Test, Size)
@@ -71,11 +51,13 @@ TestMaxJolt("987654321111111", "987654321111", 12)
 TestMaxJolt("811111111111119", "811111111119", 12)
 TestMaxJolt("234234234234278", "434234234278", 12)
 TestMaxJolt("818181911112111", "888911112111", 12)
-
+--
 print("# Calculate MaxJolt")
 local TotalJolt = 0
-
+--
 for battery_line in io.lines("full_input") do
-	TotalJolt = TotalJolt + MaxJolt(battery_line)
+	local Jolt = MaxJolt(battery_line, 12)
+	print(Jolt)
+	TotalJolt = TotalJolt + Jolt
 end
-print("Total " .. TotalJolt)
+print("Total " .. string.format("%18.0f", TotalJolt))

2025/Day4/Day4_first.lua

@@ -10,7 +10,7 @@
 --
 --
 --local input_file = "test"
-local input_file = "full"
+local input_file = "Day4/full"
 local warehouse = {}
 
 local row = 0

2025/Day5/Day5.lua

@@ -0,0 +1,94 @@
+-- Using Autorun now
+print("Starting Day 5...")
+
+local input_file = "Day5/full"
+local DEBUG = false
+local Freshness = {
+	Range = {},
+}
+
+function debug(msg)
+	if DEBUG then
+		print(msg)
+	end
+end
+
+function Freshness.add(R)
+	local S, E = string.match(R, "(%d+)-(%d+)")
+	local Set = { tonumber(S), tonumber(E) }
+	table.insert(Freshness.Range, Set)
+end
+
+function Freshness.show()
+	for k, v in pairs(Freshness.Range) do
+		print(string.format("%d-%d", v[1], v[2]))
+	end
+end
+
+function Freshness.check(value)
+	cv = tonumber(value)
+	for k, v in pairs(Freshness.Range) do
+		if cv >= v[1] and cv <= v[2] then
+			return true
+		end
+	end
+	return false
+end
+
+function Freshness.CalculateIDs()
+	-- Copy and Sort
+	table.sort(Freshness.Range, function(a, b)
+		return a[1] < b[1]
+	end)
+	local IDTable = {}
+	local count = 0
+	for kadd, vadd in pairs(Freshness.Range) do
+		local merged = false
+		debug("Checking " .. vadd[1] .. "-" .. vadd[2])
+		for kcheck, vcheck in pairs(IDTable) do
+			-- Check Lower
+			debug("  Compare " .. vcheck[1] .. "-" .. vcheck[2])
+			if vadd[1] >= vcheck[1] and vadd[1] <= vcheck[2] then
+				if vadd[2] > vcheck[2] then
+					debug("  Lower number inside range and higher number higher")
+					IDTable[kcheck][2] = vadd[2]
+				end
+				merged = true
+			end
+			-- Check higher
+			if vadd[2] >= vcheck[1] and vadd[2] <= vcheck[2] then
+				if vadd[1] < vcheck[1] then
+					debug("  Higher number inside range and lower number lower")
+					IDTable[kcheck][1] = vadd[1]
+				end
+				merged = true
+			end
+		end
+		if not merged then
+			table.insert(IDTable, vadd)
+		end
+	end
+	local countIDs = 0
+	for k, v in pairs(IDTable) do
+		countIDs = countIDs + (v[2] - v[1]) + 1
+		print(string.format("Range %d-%d = %d  Total %d", v[1], v[2], (v[2] - v[1] + 1), countIDs))
+	end
+	return countIDs
+end
+
+local InputMode = true
+local FreshCounter = 0
+for line in io.lines(input_file) do
+	if line == "" then
+		InputMode = false
+	elseif InputMode then
+		Freshness.add(line)
+	else
+		if Freshness.check(line) then
+			FreshCounter = FreshCounter + 1
+		end
+	end
+end
+
+print("Found Fresh Ingredients " .. FreshCounter)
+print(string.format("Found IDs %18.0f", Freshness.CalculateIDs()))

2025/Day5/test

@@ -0,0 +1,11 @@
+3-5
+10-14
+16-20
+12-18
+
+1
+5
+8
+11
+17
+32

2025/README.md

@@ -18,7 +18,16 @@ This is mostly so I can keep notes on my progress, in single markdown format so
 ## Lessons third day
 
 1. Can't win em all
+2. Code is much shorter because I'm getting better with Lua, yay
 
 ## Lessons fourth day
 
 1. Need about an hour to do both, but also speeding up
+
+## Lessons fifth day
+
+1. Lua has a maximum table size, so no brute forcing :)
+2. When doing any type of comparing, a good pre-sort helps 
+
+
+

2025/autorun.lua

@@ -0,0 +1,22 @@
+-- Use this to get the buffer ID where you want the output
+-- echo nvim_get_current_buf()
+vim.api.nvim_create_autocmd("BufWritePost", {
+	group = vim.api.nvim_create_augroup("AutoRunCode", { clear = true }),
+	pattern = "*.lua",
+	callback = function()
+		local bufnr = 21
+		vim.fn.jobstart({ "lua", "Day5/Day5.lua" }, {
+			stdout_buffered = true,
+			on_stdout = function(_, data)
+				if data then
+					vim.api.nvim_buf_set_lines(bufnr, 0, -1, false, data)
+				end
+			end,
+			on_stderr = function(_, data)
+				if data then
+					vim.api.nvim_buf_set_lines(bufnr, -1, -1, false, data)
+				end
+			end,
+		})
+	end,
+})