Forgot to commit the last few days

2025/Day10/Day10.lua

@@ -0,0 +1,24 @@
+-- Advent of Code 2025 - Day 10 - Bas Grolleman
+require("functions")
+local filename = "Day10/test"
+print("Day 10")
+
+local input = {}
+for line in io.lines(filename) do
+	local switches = string.match(line, "%[([#.]+)%]")
+	local buttons = {}
+	for b in string.gmatch(line, "%(([%d,]+)%)") do
+		local sw = {}
+		for j in string.gmatch(b, "%d+") do
+			table.insert(sw, tonumber(j))
+		end
+		table.insert(buttons, sw)
+	end
+
+	table.insert(input, {
+		switches = switches,
+		buttons = buttons,
+	})
+end
+
+print_table(input)

2025/Day10/test

@@ -0,0 +1,3 @@
+[.##.] (3) (1,3) (2) (2,3) (0,2) (0,1) {3,5,4,7}
+[...#.] (0,2,3,4) (2,3) (0,4) (0,1,2) (1,2,3,4) {7,5,12,7,2}
+[.###.#] (0,1,2,3,4) (0,3,4) (0,1,2,4,5) (1,2) {10,11,11,5,10,5}

2025/Day12/Day12.lua

@@ -0,0 +1,47 @@
+-- Advent of Code 2025 - Day 12 - Bas Grolleman
+require("functions")
+print("Day 12")
+local filename = "Day12/test"
+local input = file_lines_to_table(filename)
+
+function parseInput(lines)
+	local packages = {}
+	local locations = {}
+
+	-- Parse first dataset (patterns 0-5)
+	local pattern = {}
+	local patternNum = -1
+
+	for i, line in ipairs(lines) do
+		if line:match("^%d:$") then
+			-- New pattern number
+			patternNum = tonumber(line:sub(1, 1))
+			pattern = {}
+		elseif line:match("^[%.#]+$") and #line == 3 and patternNum ~= -1 then
+			-- Pattern row
+			table.insert(pattern, line)
+			if #pattern == 3 then
+				packages[patternNum] = pattern
+			end
+		end
+	end
+
+	-- Parse second dataset (dimension and coordinate data)
+	for i, line in ipairs(lines) do
+		local x, y, coords = line:match("^(%d+)x(%d+):%s+(.+)$")
+		if x and y then
+			local data = { x = tonumber(x), y = tonumber(y), coords = {} }
+			for num in coords:gmatch("%d+") do
+				table.insert(data.coords, tonumber(num))
+			end
+			table.insert(locations, data)
+		end
+	end
+
+	return packages, locations
+end
+
+local shapes, locations = parseInput(input)
+
+print_table(shapes)
+print_table(locations)

2025/Day12/test

@@ -0,0 +1,33 @@
+0:
+###
+##.
+##.
+
+1:
+###
+##.
+.##
+
+2:
+.##
+###
+##.
+
+3:
+##.
+###
+##.
+
+4:
+###
+#..
+###
+
+5:
+###
+.#.
+###
+
+4x4: 0 0 0 0 2 0
+12x5: 1 0 1 0 2 2
+12x5: 1 0 1 0 3 2

2025/Day7/Day7.lua

@@ -33,3 +33,48 @@ for R = 2, rows do
 end
 print("Total splits " .. splits)
 print("Total quantumsplits " .. quantumsplits)
+
+-- Okay, time to learn how to make a tree node
+-- Great, I learned how to try a brute force (that will obviously never work)
+
+function createNode(col)
+	local node = {
+		col = col,
+		childeren = {},
+	}
+	return node
+end
+
+local root = createNode(math.ceil(cols / 2))
+
+local active_nodes = { root }
+
+for row = 2, rows do
+	for k, n in ipairs(active_nodes) do
+		if next(n.childeren) == nil then
+			if input[row][n.col] == "^" then
+				local a = createNode(n.col - 1)
+				local b = createNode(n.col + 1)
+				table.insert(active_nodes, a)
+				table.insert(active_nodes, b)
+				n.childeren = { a, b }
+			end
+		end
+	end
+end
+
+local gt = 0
+function count_table(t, indent)
+	indent = indent or ""
+	print(indent .. "c" .. t.col)
+	if next(t.childeren) ~= nil then
+		for k, v in pairs(t.childeren) do
+			count_table(v, indent .. "  ")
+		end
+	else
+		gt = gt + 1
+	end
+end
+
+count_table(root)
+print("Grand Total " .. gt)

2025/Day8/Day8.lua

@@ -0,0 +1,121 @@
+-- Advent of Code 2025 - Day 8 - Bas Grolleman
+require("functions")
+
+-- Variables
+local boxes = {}
+local inputfile = "Day8/test"
+local limit = 11
+
+function distance(p1, p2)
+	return math.sqrt((p2.x - p1.x) ^ 2 + (p2.y - p1.y) ^ 2 + (p2.z - p1.z) ^ 2)
+end
+function boxes.find(id)
+	for i, box in ipairs(boxes) do
+		if box.id == id then
+			return box
+		end
+	end
+end
+
+local id_counter = 0
+for line in io.lines(inputfile) do
+	local x, y, z = line:match("(%d+)%,(%d+)%,(%d+)")
+	id_counter = id_counter + 1
+	local box = {
+		id = id_counter,
+		x = tonumber(x),
+		y = tonumber(y),
+		z = tonumber(z),
+		xyz = x .. "," .. y .. "," .. z,
+	}
+	table.insert(boxes, box)
+end
+
+local distance_table = {}
+for i, box1 in ipairs(boxes) do
+	for j, box2 in ipairs(boxes) do
+		if box1.id ~= box2.id then
+			table.insert(distance_table, {
+				id1 = box1.id,
+				id2 = box2.id,
+				d = distance(box1, box2),
+			})
+		end
+	end
+end
+table.sort(distance_table, function(a, b)
+	return a.d < b.d
+end)
+
+local circuit = 0
+for i, dt in ipairs(distance_table) do
+	box1 = boxes.find(dt.id1)
+	box2 = boxes.find(dt.id2)
+	if limit > 0 then
+		io.write(string.format("%2d Linking %2d <-> %2d %.0f", limit, box1.id, box2.id, dt.d))
+		if box1.c == nil and box2.c == nil then
+			circuit = circuit + 1
+			box1.c = circuit
+			box2.c = circuit
+			limit = limit - 1
+			print(" C=" .. circuit .. " BOTH")
+		elseif box1.c ~= nil and box2.c ~= nil then
+			if box1.c == box2.c then
+				print(" C=" .. box1.c .. " ALREADY")
+			else
+				-- Oh look, we merge 2 circuits!
+				print(" Merging " .. box1.c .. " and " .. box2.c)
+				local remove = box2.c
+				for k, uc in ipairs(boxes) do
+					if uc.c == remove then
+						uc.c = box1.c
+					end
+				end
+				limit = limit - 1
+			end
+		elseif box1.c == nil then
+			box1.c = box2.c
+			limit = limit - 1
+			print(" C=" .. box1.c .. " HOOK BOX1")
+		elseif box2.c == nil then
+			box2.c = box1.c
+			limit = limit - 1
+			print(" C=" .. box1.c .. " HOOK BOX2")
+		end
+	end
+end
+for k, box in ipairs(boxes) do
+	if box.c == nil then
+		circuit = circuit + 1
+		box.c = circuit
+	end
+end
+table.sort(boxes, function(a, b)
+	return a.c < b.c
+end)
+
+local lc = 0
+local circuit_size = {}
+
+for k, box in ipairs(boxes) do
+	if lc ~= box.c then
+		circuit_size[box.c] = 1
+		print()
+	else
+		circuit_size[box.c] = circuit_size[box.c] + 1
+	end
+	print(string.format("Box %2d Circuit %2d", box.id, box.c))
+	lc = box.c
+end
+
+print()
+local circuit_size2 = {}
+for k, v in pairs(circuit_size) do
+	circuit_size2[#circuit_size2 + 1] = v
+end
+table.sort(circuit_size2, function(a, b)
+	return b < a
+end)
+print_table(circuit_size2)
+local total = circuit_size2[1] * circuit_size2[2] * circuit_size2[3]
+print("Total size " .. total)

2025/Day8/full

@@ -0,0 +1,1000 @@
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2025/Day8/test

@@ -0,0 +1,20 @@
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+425,690,689

2025/Day9/Day9.lua

@@ -0,0 +1,38 @@
+-- Advent of Code 2025 - Day 9 - Bas Grolleman
+require("functions")
+local filename = "Day9/full"
+local grid = {}
+for line in io.lines(filename) do
+	local y, x = line:match("(%d+),(%d+)")
+	table.insert(grid, {
+		x = x,
+		y = y,
+	})
+end
+
+function size(p1, p2)
+	width = math.abs(p1.x - p2.x) + 1
+	height = math.abs(p1.y - p2.y) + 1
+	-- print(p1.x .. "," .. p1.y)
+	-- print(p2.x .. "," .. p2.y)
+	-- print(width .. " " .. height .. " " .. (width * height))
+	return width * height
+end
+
+testsize = size({ y = 2, x = 5 }, { y = 9, x = 7 })
+print("Testing size function 24=" .. testsize)
+
+local distance = {}
+local biggest = 0
+for k1, p1 in ipairs(grid) do
+	for k2, p2 in ipairs(grid) do
+		if k1 ~= k2 then
+			local cs = size(p1, p2)
+			if biggest < cs then
+				biggest = cs
+			end
+		end
+	end
+end
+
+print(biggest)

2025/Day9/full

@@ -0,0 +1,496 @@
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2025/Day9/test

@@ -0,0 +1,8 @@
+7,1
+11,1
+11,7
+9,7
+9,5
+2,5
+2,3
+7,3

2025/autorun.lua

@@ -4,8 +4,9 @@ vim.api.nvim_create_autocmd("BufWritePost", {
 	group = vim.api.nvim_create_augroup("AutoRunCode", { clear = true }),
 	pattern = "*.lua",
 	callback = function()
-		local bufnr = 21
+		local day = 12
-		vim.fn.jobstart({ "lua", "Day7/Day7.lua" }, {
+		local bufnr = 43
+		vim.fn.jobstart({ "lua", "Day" .. day .. "/Day" .. day .. ".lua" }, {
 			stdout_buffered = true,
 			on_stdout = function(_, data)
 				if data then

2025/functions.lua

@@ -26,3 +26,15 @@ function tablelength(T)
 	end
 	return count
 end
+
+function print_table(t, indent)
+	indent = indent or ""
+	for k, v in pairs(t) do
+		if type(v) == "table" then
+			print(indent .. k .. ":")
+			print_table(v, indent .. "  ")
+		else
+			print(indent .. k .. ": " .. tostring(v))
+		end
+	end
+end