Merge pull request #12 from dieseltravis/glitch

Glitch day 4

README.md

@@ -6,16 +6,16 @@ my 2023 solutions on glitch: [branch-three-oviraptor](https://branch-three-ovira
 
 also on github: [dieseltravis/aoc2023](https://github.com/dieseltravis/aoc2023)
 
-[![Days completed in a row](https://img.shields.io/badge/⭐%20days%20in%20a%20row-3-blueviolet)](https://adventofcode.com/2023/) [![glitch](https://shields.io/badge/glitch-%F0%9F%91%8D%F0%9F%8E%8F-blue?logo=glitch&logoColor=violet)](https://glitch.com/)
+[![Days completed in a row](https://img.shields.io/badge/⭐%20days%20in%20a%20row-4-blueviolet)](https://adventofcode.com/2023/) [![glitch](https://shields.io/badge/glitch-%F0%9F%91%8D%F0%9F%8E%8F-blue?logo=glitch&logoColor=violet)](https://glitch.com/)
 
 [![Node.js CI](https://github.com/dieseltravis/aoc2023/actions/workflows/node.js.yml/badge.svg)](https://github.com/dieseltravis/aoc2023/actions/workflows/node.js.yml) [![FOSSA Status](https://app.fossa.com/api/projects/git%2Bgithub.com%2Fdieseltravis%2Faoc2023.svg?type=shield)](https://app.fossa.com/projects/git%2Bgithub.com%2Fdieseltravis%2Faoc2023?ref=badge_shield) [![js-semistandard-style](https://img.shields.io/badge/code%20style-semistandard-brightgreen.svg?logo=javascript)](https://github.com/standard/semistandard)
 
 ## solutions:
 1. [day one](https://branch-three-oviraptor.glitch.me/day/01)
 2. [day two](https://branch-three-oviraptor.glitch.me/day/02)
 3. [day three](https://branch-three-oviraptor.glitch.me/day/03)
-<!--
 4. [day four](https://branch-three-oviraptor.glitch.me/day/04)
+<!--
 5. [day five](https://branch-three-oviraptor.glitch.me/day/05)
 6. [day six](https://branch-three-oviraptor.glitch.me/day/06)
 7. [day seven](https://branch-three-oviraptor.glitch.me/day/07)

package.json

@@ -1,6 +1,6 @@
 {
   "name": "branch-three-oviraptor",
-  "version": "2023.12.03",
+  "version": "2023.12.04",
   "description": "Travis's Advent of Code 2023",
   "author": "Travis Hardiman",
   "homepage": "https://branch-three-oviraptor.glitch.me/",

public/funs.js

@@ -241,10 +241,43 @@
     },
     day4: {
       part1: (data) => {
-        return data;
+        const lotto = data.trim().split('\n').map(cals => {
+          const line = cals.split('|');
+          const card = line[0].split(':');
+          const values = card[1].trim().split(/\s+/).map(Number);
+          const winner = line[1].trim().split(/\s+/).map(Number);
+          const good = values.filter(n => winner.includes(n));
+          let score = good.length;
+          if (score > 0) {
+            score = 2 ** (score - 1);
+          }
+          return score;
+        });
+        return lotto.reduce((acc, item) => acc + item, 0);
       },
       part2: (data) => {
-        return data;
+        const copies = {};
+        const lotto = data.trim().split('\n').map(cals => {
+          const line = cals.split('|');
+          const card = line[0].split(':');
+          const num = +card[0].match(/\d+/)[0];
+          const values = card[1].trim().split(/\s+/).map(Number);
+          const winner = line[1].trim().split(/\s+/).map(Number);
+          const good = values.filter(n => winner.includes(n));
+          const score = good.length;
+          if (score > 0) {
+            const inc = 1 + (copies[num] || 0);
+            for (let i = num + 1; i <= num + score; i++) {
+              if (!copies[i]) {
+                copies[i] = 0;
+              }
+              copies[i] += inc;
+            }
+          }
+          return score;
+        });
+        console.log(lotto, copies);
+        return lotto.length + Object.values(copies).reduce((acc, item) => acc + item, 0);
       }
     },
     day5: {

views/index.html

@@ -23,8 +23,8 @@ <h2>solutions:</h2>
         <li><a href="/day/01">day 01</a></li>
         <li><a href="/day/02">day 02</a></li>
         <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>