add stuff form last year (gave up quickly)

2023/03/.gitignore

@@ -0,0 +1,175 @@
+# Based on https://raw.githubusercontent.com/github/gitignore/main/Node.gitignore
+
+# Logs
+
+logs
+_.log
+npm-debug.log_
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+.pnpm-debug.log*
+
+# Caches 
+
+.cache
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+
+report.[0-9]_.[0-9]_.[0-9]_.[0-9]_.json
+
+# Runtime data
+
+pids
+_.pid
+_.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+
+lib-cov
+
+# Coverage directory used by tools like istanbul
+
+coverage
+*.lcov
+
+# nyc test coverage
+
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+
+bower_components
+
+# node-waf configuration
+
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+
+build/Release
+
+# Dependency directories
+
+node_modules/
+jspm_packages/
+
+# Snowpack dependency directory (https://snowpack.dev/)
+
+web_modules/
+
+# TypeScript cache
+
+*.tsbuildinfo
+
+# Optional npm cache directory
+
+.npm
+
+# Optional eslint cache
+
+.eslintcache
+
+# Optional stylelint cache
+
+.stylelintcache
+
+# Microbundle cache
+
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+
+.node_repl_history
+
+# Output of 'npm pack'
+
+*.tgz
+
+# Yarn Integrity file
+
+.yarn-integrity
+
+# dotenv environment variable files
+
+.env
+.env.development.local
+.env.test.local
+.env.production.local
+.env.local
+
+# parcel-bundler cache (https://parceljs.org/)
+
+.parcel-cache
+
+# Next.js build output
+
+.next
+out
+
+# Nuxt.js build / generate output
+
+.nuxt
+dist
+
+# Gatsby files
+
+# Comment in the public line in if your project uses Gatsby and not Next.js
+
+# https://nextjs.org/blog/next-9-1#public-directory-support
+
+# public
+
+# vuepress build output
+
+.vuepress/dist
+
+# vuepress v2.x temp and cache directory
+
+.temp
+
+# Docusaurus cache and generated files
+
+.docusaurus
+
+# Serverless directories
+
+.serverless/
+
+# FuseBox cache
+
+.fusebox/
+
+# DynamoDB Local files
+
+.dynamodb/
+
+# TernJS port file
+
+.tern-port
+
+# Stores VSCode versions used for testing VSCode extensions
+
+.vscode-test
+
+# yarn v2
+
+.yarn/cache
+.yarn/unplugged
+.yarn/build-state.yml
+.yarn/install-state.gz
+.pnp.*
+
+# IntelliJ based IDEs
+.idea
+
+# Finder (MacOS) folder config
+.DS_Store

2023/03/README.md

@@ -0,0 +1,15 @@
+# advent-2023-03
+
+To install dependencies:
+
+```bash
+bun install
+```
+
+To run:
+
+```bash
+bun run index.ts
+```
+
+This project was created using `bun init` in bun v1.0.14. [Bun](https://bun.sh) is a fast all-in-one JavaScript runtime.

2023/03/index.ts

@@ -0,0 +1,58 @@
+const args = Bun.argv.slice(2)
+
+if(args.length !== 1) {
+    console.error('Please, provide an input file')
+    process.exit(1)
+}
+
+const filename = args[0];
+
+
+const input = Bun.file(filename)
+const text = await input.text()
+
+let count = 0
+let prevNums: Array<[string, number]> = []
+let prevSyms: Array<[number, string[]]> = []
+text.split('\n').forEach(ln => {
+    const line = ln.trim()
+    if(!line) return
+
+    let tokens = line.matchAll(/\d+|\*/g)
+
+    let nums: Array<[string, number]> = [], syms: Array<[number, string[]]> = []
+    for(const token of tokens) {
+        /\d/.test(token.toString()) ?
+            nums.push([token.toString(), token.index as number]) :
+            syms.push([token.index as number, []])
+    }
+
+
+    pushNums(prevSyms, nums)
+        .map(([_index, attached]) => attached)
+        .filter(attached => attached.length == 2)
+        .forEach(attached => {
+            count += attached
+                .map(e => parseInt(e))
+                .reduce((a = 1, b = 1) => a * b, 1)
+        })
+
+    syms = pushNums(syms, nums)
+    syms = pushNums(syms, prevNums)
+
+    prevNums = nums
+    prevSyms = syms
+})
+
+console.log(count)
+
+function pushNums(symbols: Array<[number, string[]]>, nums: Array<[string, number]>): [number, string[]][] {
+    return symbols.map(([index, attached]) => {
+        attached.push(
+            ...nums.filter(([num, nindex]) => {
+                return index >= nindex - 1 && index <= nindex + num.length
+            }).map(([num]) => num)
+        )
+        return [index, attached]
+    })
+}

2023/03/package.json

@@ -0,0 +1,14 @@
+{
+  "name": "advent-2023-03",
+  "module": "index.ts",
+  "type": "module",
+  "scripts": {
+    "start": "bun run ."
+  },
+  "devDependencies": {
+    "bun-types": "latest"
+  },
+  "peerDependencies": {
+    "typescript": "^5.0.0"
+  }
+}

2023/03/sample.txt

@@ -0,0 +1,10 @@
+467..114..
+...*......
+..35..633.
+......#...
+617*......
+.....+.58.
+..592.....
+......755.
+...$.*....
+.664.598..

2023/03/tsconfig.json

@@ -0,0 +1,22 @@
+{
+  "compilerOptions": {
+    "lib": ["ESNext"],
+    "module": "esnext",
+    "target": "esnext",
+    "moduleResolution": "bundler",
+    "moduleDetection": "force",
+    "allowImportingTsExtensions": true,
+    "noEmit": true,
+    "composite": true,
+    "strict": true,
+    "downlevelIteration": true,
+    "skipLibCheck": true,
+    "jsx": "react-jsx",
+    "allowSyntheticDefaultImports": true,
+    "forceConsistentCasingInFileNames": true,
+    "allowJs": true,
+    "types": [
+      "bun-types" // add Bun global
+    ]
+  }
+}