From f858b3d412a4f4382aec783be9343a77048ec13c Mon Sep 17 00:00:00 2001
From: Travis Hardiman <dieseltravis@users.noreply.github.com>
Date: Sat, 7 Dec 2024 00:55:18 -0500
Subject: [PATCH 1/2] day 7, part 1

---
 public/funs.js | 34 +++++++++++++++++++++++++++++++++-
 1 file changed, 33 insertions(+), 1 deletion(-)

diff --git a/public/funs.js b/public/funs.js
index 2195eb8..1fd76eb 100644
--- a/public/funs.js
+++ b/public/funs.js
@@ -348,7 +348,39 @@
       part2: d => d
     },
     day7: {
-      part1: d => d,
+      part1: (data) => {
+        const input = data.trim().split('\n').map(r => {
+          const row = r.split(':').map(p => p.trim());
+          return {
+            key: +row[0],
+            vals: row[1].split(' ').map(Number)
+          };
+        });
+        console.log(input);
+        const ops = [
+          (a, b) => a + b,
+          (a, b) => a * b
+        ];
+        const good = [];
+        for (let l = input.length; l--;) {
+          const key = input[l].key;
+          const vals = input[l].vals;
+          const valen = vals.length;
+          for (let dec = Math.pow(2, valen - 1); dec--;) {
+            const bin = dec.toString(2).padStart(valen - 1, '0').split('').map(Number);
+            let test = vals[0];
+            for (let i = 1; i < valen; i++) {
+              test = ops[bin[i - 1]](test, vals[i]);
+            }
+            if (key === test) {
+              good.push(key);
+              break;
+            }
+          }
+        }
+        const sum = good.reduce((acc, n) => acc + n, 0);
+        return sum;
+      },
       part2: d => d
     },
     day8: {

From fa1b64bdedaf578d65bb46f2675e71d0086a163d Mon Sep 17 00:00:00 2001
From: Travis Hardiman <dieseltravis@users.noreply.github.com>
Date: Sat, 7 Dec 2024 01:06:20 -0500
Subject: [PATCH 2/2] day 7, part 2

---
 README.md        |  2 +-
 package.json     |  2 +-
 public/funs.js   | 35 ++++++++++++++++++++++++++++++++++-
 views/index.html |  2 +-
 4 files changed, 37 insertions(+), 4 deletions(-)

diff --git a/README.md b/README.md
index a4066ee..0237d94 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ my 2024 solutions on ~~glitch: [meowing-holy-carbon](https://meowing-holy-carbon
 
 also on github: [dieseltravis/aoc2024](https://github.com/dieseltravis/aoc2024)
 
-[![Days completed in a row](https://img.shields.io/badge/⭐%20days%20in%20a%20row-5-blueviolet)](https://adventofcode.com/2024/) [![Node.js CI](https://github.com/dieseltravis/aoc2024/actions/workflows/node.js.yml/badge.svg)](https://github.com/dieseltravis/aoc2024/actions/workflows/node.js.yml) [![js-semistandard-style](https://img.shields.io/badge/code%20style-semistandard-brightgreen.svg?logo=javascript)](https://github.com/standard/semistandard)
+[![Node.js CI](https://github.com/dieseltravis/aoc2024/actions/workflows/node.js.yml/badge.svg)](https://github.com/dieseltravis/aoc2024/actions/workflows/node.js.yml) [![js-semistandard-style](https://img.shields.io/badge/code%20style-semistandard-brightgreen.svg?logo=javascript)](https://github.com/standard/semistandard)
 
 ## solutions:
 Install node `>18.18.x`, `yarn`, run `yarn install`, and then `yarn start`.
diff --git a/package.json b/package.json
index c70fd20..ee9a929 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "meowing-holy-carbon",
-  "version": "2024.12.05",
+  "version": "2024.12.07",
   "description": "Travis's Advent of Code 2024",
   "author": "Travis Hardiman",
   "homepage": "https://github.com/dieseltravis/aoc2024/",
diff --git a/public/funs.js b/public/funs.js
index 1fd76eb..8d03eb0 100644
--- a/public/funs.js
+++ b/public/funs.js
@@ -381,7 +381,40 @@
         const sum = good.reduce((acc, n) => acc + n, 0);
         return sum;
       },
-      part2: d => d
+      part2: (data) => {
+        const input = data.trim().split('\n').map(r => {
+          const row = r.split(':').map(p => p.trim());
+          return {
+            key: +row[0],
+            vals: row[1].split(' ').map(Number)
+          };
+        });
+        console.log(input);
+        const ops = [
+          (a, b) => a + b,
+          (a, b) => a * b,
+          (a, b) => +(a + '' + b)
+        ];
+        const good = [];
+        for (let l = input.length; l--;) {
+          const key = input[l].key;
+          const vals = input[l].vals;
+          const valen = vals.length;
+          for (let dec = Math.pow(3, valen - 1); dec--;) {
+            const bin = dec.toString(3).padStart(valen - 1, '0').split('').map(Number);
+            let test = vals[0];
+            for (let i = 1; i < valen; i++) {
+              test = ops[bin[i - 1]](test, vals[i]);
+            }
+            if (key === test) {
+              good.push(key);
+              break;
+            }
+          }
+        }
+        const sum = good.reduce((acc, n) => acc + n, 0);
+        return sum;
+      }
     },
     day8: {
       part1: d => d,
diff --git a/views/index.html b/views/index.html
index 9765750..2ab3542 100644
--- a/views/index.html
+++ b/views/index.html
@@ -25,9 +25,9 @@ <h2>solutions:</h2>
         <li><a href="/day/03">day 03</a></li>
         <li><a href="/day/04">day 04</a></li>
         <li><a href="/day/05">day 05</a></li>
-        <!-- 
         <li><a href="/day/06">day 06</a></li>
         <li><a href="/day/07">day 07</a></li>
+        <!-- 
         <li><a href="/day/08">day 08</a></li>
         <li><a href="/day/09">day 09</a></li>
         <li><a href="/day/10">day 10</a></li>