From 0add2ecd0304e16675995e75f3ee90436e29a5aa Mon Sep 17 00:00:00 2001
From: LordBaryhobal <lordbaryhobal@gmail.com>
Date: Sat, 6 Dec 2025 11:47:03 +0100
Subject: [PATCH] feat: solve day 6 puzzle 2

---
 README.md             |  4 ++--
 res/stats.json        |  2 +-
 src/day06/puzzle2.lua | 53 ++++++++++++++++++++++++++++++++++++++++++-
 3 files changed, 55 insertions(+), 4 deletions(-)

diff --git a/README.md b/README.md
index 8083c96..59cf567 100644
--- a/README.md
+++ b/README.md
@@ -8,10 +8,10 @@ This project can also be run using the amazing [CraftOS-PC emulator](https://git
 ## Progress
 
 <!-- calendar-start -->
-#### Stars: 11/24
+#### Stars: 12/24
 
 |Mon|Tue|Wed|Thu|Fri|Sat|Sun|
 |:-:|:-:|:-:|:-:|:-:|:-:|:-:|
-|1<br>:star::star:|2<br>:star::star:|3<br>:star::star:|4<br>:star::star:|5<br>:star::star:|6<br>:star:|7<br>|
+|1<br>:star::star:|2<br>:star::star:|3<br>:star::star:|4<br>:star::star:|5<br>:star::star:|6<br>:star::star:|7<br>|
 |8<br>|9<br>|10<br>|11<br>|12<br>|||
 <!-- calendar-end -->
diff --git a/res/stats.json b/res/stats.json
index 46ad079..73b3cfe 100644
--- a/res/stats.json
+++ b/res/stats.json
@@ -21,7 +21,7 @@
     },
     "day06": {
         "puzzle1": true,
-        "puzzle2": false
+        "puzzle2": true
     },
     "day07": {
         "puzzle1": false,
diff --git a/src/day06/puzzle2.lua b/src/day06/puzzle2.lua
index 2f4bc9a..b761383 100644
--- a/src/day06/puzzle2.lua
+++ b/src/day06/puzzle2.lua
@@ -1,7 +1,58 @@
+local strings = require "cc.strings"
 local puzzle2 = {}
 
+function puzzle2.parseNumbers(lines)
+    local numbers = {}
+    local n = #lines
+
+    for i, line in ipairs(lines) do
+        if i ~= n then
+            for j=1, #line do
+                local c = line:sub(j, j)
+                if #numbers < j then
+                    table.insert(numbers, {})
+                end
+                if c ~= " " then
+                    table.insert(numbers[j], c)
+                end
+            end
+        end
+    end
+
+    local problems = {{}}
+    for _, num in ipairs(numbers) do
+        if #num == 0 then
+            table.insert(problems, {})
+        else
+            local value = tonumber(table.concat(num, ""))
+            table.insert(problems[#problems], value)
+        end
+    end
+    return problems
+end
+
 function puzzle2.solve(input)
-    return 0
+    local lines = strings.split(input, "\n")
+    local values = puzzle2.parseNumbers(lines)
+    local ops = strings.split(lines[#lines], "%s+")
+
+    local total = 0
+    for p, numbers in ipairs(values) do
+        local op = ops[p]
+        local value = 0
+        if op == "*" then
+            value = 1
+        end
+        for _, num in ipairs(numbers) do
+            if op == "+" then
+                value = value + num
+            else
+                value = value * num
+            end
+        end
+        total = total + value
+    end
+    return total
 end
 
 return puzzle2