diff --git a/day-12/.gitignore b/day-12/.gitignore new file mode 100644 index 0000000..5bf19b0 --- /dev/null +++ b/day-12/.gitignore @@ -0,0 +1,3 @@ +build/ +sol.js +node_modules/ diff --git a/day-12/package-lock.json b/day-12/package-lock.json new file mode 100644 index 0000000..15123cd --- /dev/null +++ b/day-12/package-lock.json @@ -0,0 +1,46 @@ +{ + "name": "day-12", + "lockfileVersion": 2, + "requires": true, + "packages": { + "": { + "devDependencies": { + "@types/node": "^18.11.14", + "typescript": "^4.9.4" + } + }, + "node_modules/@types/node": { + "version": "18.11.14", + "resolved": "https://registry.npmjs.org/@types/node/-/node-18.11.14.tgz", + "integrity": "sha512-0KXV57tENYmmJMl+FekeW9V3O/rlcqGQQJ/hNh9r8pKIj304pskWuEd8fCyNT86g/TpO0gcOTiLzsHLEURFMIQ==", + "dev": true + }, + "node_modules/typescript": { + "version": "4.9.4", + "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.9.4.tgz", + "integrity": "sha512-Uz+dTXYzxXXbsFpM86Wh3dKCxrQqUcVMxwU54orwlJjOpO3ao8L7j5lH+dWfTwgCwIuM9GQ2kvVotzYJMXTBZg==", + "dev": true, + "bin": { + "tsc": "bin/tsc", + "tsserver": "bin/tsserver" + }, + "engines": { + "node": ">=4.2.0" + } + } + }, + "dependencies": { + "@types/node": { + "version": "18.11.14", + "resolved": "https://registry.npmjs.org/@types/node/-/node-18.11.14.tgz", + "integrity": "sha512-0KXV57tENYmmJMl+FekeW9V3O/rlcqGQQJ/hNh9r8pKIj304pskWuEd8fCyNT86g/TpO0gcOTiLzsHLEURFMIQ==", + "dev": true + }, + "typescript": { + "version": "4.9.4", + "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.9.4.tgz", + "integrity": "sha512-Uz+dTXYzxXXbsFpM86Wh3dKCxrQqUcVMxwU54orwlJjOpO3ao8L7j5lH+dWfTwgCwIuM9GQ2kvVotzYJMXTBZg==", + "dev": true + } + } +} diff --git a/day-12/package.json b/day-12/package.json new file mode 100644 index 0000000..cfc736a --- /dev/null +++ b/day-12/package.json @@ -0,0 +1,9 @@ +{ + "devDependencies": { + "@types/node": "^18.11.14", + "typescript": "^4.9.4" + }, + "scripts": { + "build": "tsc" + } +} diff --git a/day-12/sol.ts b/day-12/sol.ts new file mode 100644 index 0000000..7143403 --- /dev/null +++ b/day-12/sol.ts @@ -0,0 +1,59 @@ +import * as input from "fs"; + +type NestedNumbers = Array; + +const compare = ( + a: NestedNumbers | number, + b: NestedNumbers | number +): boolean => { + if (typeof a === typeof b && typeof b === "number") return a < b; + if (Array.isArray(a) && Array.isArray(b)) { + for (let i = 0; i < a.length; i++) { + if (i >= b.length) return false; + if (compare(a[i], b[i])) return true; + if (compare(b[i], a[i])) return false; + } + return compare(a.length, b.length); + } + return compare(Array.isArray(b) ? [a] : a, Array.isArray(a) ? [b] : b); +}; + +const main = (): void => { + const lines: NestedNumbers[] = input + .readFileSync("input", "utf-8") + .split("\n") + .filter((x) => x) + .map((x) => JSON.parse(x)); + + const pairs: [NestedNumbers, NestedNumbers][] = []; + for (let i = 0; i < lines.length; i += 2) { + const pair: [NestedNumbers, NestedNumbers] = [lines[i], lines[i + 1]]; + pairs.push(pair); + } + + console.log( + pairs.reduce((acc, [a, b], i) => acc + (compare(a, b) ? i + 1 : 0), 0) + ); + + lines.push([[2]]); + lines.push([[6]]); + + const sorted = lines.sort((a, b) => { + if (compare(a, b)) return -1; + if (compare(b, a)) return 1; + return 0; + }); + + const isPacket = (num: number) => (x: NestedNumbers) => + Array.isArray(x) && + x.length === 1 && + Array.isArray(x[0]) && + x[0].length === 1 && + x[0][0] === num; + + console.log( + (sorted.findIndex(isPacket(6)) + 1) * (sorted.findIndex(isPacket(2)) + 1) + ); +}; + +main(); diff --git a/day-12/tsconfig.json b/day-12/tsconfig.json new file mode 100644 index 0000000..75dcaea --- /dev/null +++ b/day-12/tsconfig.json @@ -0,0 +1,103 @@ +{ + "compilerOptions": { + /* Visit https://aka.ms/tsconfig to read more about this file */ + + /* Projects */ + // "incremental": true, /* Save .tsbuildinfo files to allow for incremental compilation of projects. */ + // "composite": true, /* Enable constraints that allow a TypeScript project to be used with project references. */ + // "tsBuildInfoFile": "./.tsbuildinfo", /* Specify the path to .tsbuildinfo incremental compilation file. */ + // "disableSourceOfProjectReferenceRedirect": true, /* Disable preferring source files instead of declaration files when referencing composite projects. */ + // "disableSolutionSearching": true, /* Opt a project out of multi-project reference checking when editing. */ + // "disableReferencedProjectLoad": true, /* Reduce the number of projects loaded automatically by TypeScript. */ + + /* Language and Environment */ + "target": "es2016", /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */ + // "lib": [], /* Specify a set of bundled library declaration files that describe the target runtime environment. */ + // "jsx": "preserve", /* Specify what JSX code is generated. */ + // "experimentalDecorators": true, /* Enable experimental support for TC39 stage 2 draft decorators. */ + // "emitDecoratorMetadata": true, /* Emit design-type metadata for decorated declarations in source files. */ + // "jsxFactory": "", /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'. */ + // "jsxFragmentFactory": "", /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */ + // "jsxImportSource": "", /* Specify module specifier used to import the JSX factory functions when using 'jsx: react-jsx*'. */ + // "reactNamespace": "", /* Specify the object invoked for 'createElement'. This only applies when targeting 'react' JSX emit. */ + // "noLib": true, /* Disable including any library files, including the default lib.d.ts. */ + // "useDefineForClassFields": true, /* Emit ECMAScript-standard-compliant class fields. */ + // "moduleDetection": "auto", /* Control what method is used to detect module-format JS files. */ + + /* Modules */ + "module": "commonjs", /* Specify what module code is generated. */ + // "rootDir": "./", /* Specify the root folder within your source files. */ + // "moduleResolution": "node", /* Specify how TypeScript looks up a file from a given module specifier. */ + // "baseUrl": "./", /* Specify the base directory to resolve non-relative module names. */ + // "paths": {}, /* Specify a set of entries that re-map imports to additional lookup locations. */ + // "rootDirs": [], /* Allow multiple folders to be treated as one when resolving modules. */ + // "typeRoots": [], /* Specify multiple folders that act like './node_modules/@types'. */ + // "types": [], /* Specify type package names to be included without being referenced in a source file. */ + // "allowUmdGlobalAccess": true, /* Allow accessing UMD globals from modules. */ + // "moduleSuffixes": [], /* List of file name suffixes to search when resolving a module. */ + // "resolveJsonModule": true, /* Enable importing .json files. */ + // "noResolve": true, /* Disallow 'import's, 'require's or ''s from expanding the number of files TypeScript should add to a project. */ + + /* JavaScript Support */ + // "allowJs": true, /* Allow JavaScript files to be a part of your program. Use the 'checkJS' option to get errors from these files. */ + // "checkJs": true, /* Enable error reporting in type-checked JavaScript files. */ + // "maxNodeModuleJsDepth": 1, /* Specify the maximum folder depth used for checking JavaScript files from 'node_modules'. Only applicable with 'allowJs'. */ + + /* Emit */ + // "declaration": true, /* Generate .d.ts files from TypeScript and JavaScript files in your project. */ + // "declarationMap": true, /* Create sourcemaps for d.ts files. */ + // "emitDeclarationOnly": true, /* Only output d.ts files and not JavaScript files. */ + // "sourceMap": true, /* Create source map files for emitted JavaScript files. */ + // "outFile": "./", /* Specify a file that bundles all outputs into one JavaScript file. If 'declaration' is true, also designates a file that bundles all .d.ts output. */ + // "outDir": "./", /* Specify an output folder for all emitted files. */ + // "removeComments": true, /* Disable emitting comments. */ + // "noEmit": true, /* Disable emitting files from a compilation. */ + // "importHelpers": true, /* Allow importing helper functions from tslib once per project, instead of including them per-file. */ + // "importsNotUsedAsValues": "remove", /* Specify emit/checking behavior for imports that are only used for types. */ + // "downlevelIteration": true, /* Emit more compliant, but verbose and less performant JavaScript for iteration. */ + // "sourceRoot": "", /* Specify the root path for debuggers to find the reference source code. */ + // "mapRoot": "", /* Specify the location where debugger should locate map files instead of generated locations. */ + // "inlineSourceMap": true, /* Include sourcemap files inside the emitted JavaScript. */ + // "inlineSources": true, /* Include source code in the sourcemaps inside the emitted JavaScript. */ + // "emitBOM": true, /* Emit a UTF-8 Byte Order Mark (BOM) in the beginning of output files. */ + // "newLine": "crlf", /* Set the newline character for emitting files. */ + // "stripInternal": true, /* Disable emitting declarations that have '@internal' in their JSDoc comments. */ + // "noEmitHelpers": true, /* Disable generating custom helper functions like '__extends' in compiled output. */ + // "noEmitOnError": true, /* Disable emitting files if any type checking errors are reported. */ + // "preserveConstEnums": true, /* Disable erasing 'const enum' declarations in generated code. */ + // "declarationDir": "./", /* Specify the output directory for generated declaration files. */ + // "preserveValueImports": true, /* Preserve unused imported values in the JavaScript output that would otherwise be removed. */ + + /* Interop Constraints */ + // "isolatedModules": true, /* Ensure that each file can be safely transpiled without relying on other imports. */ + // "allowSyntheticDefaultImports": true, /* Allow 'import x from y' when a module doesn't have a default export. */ + "esModuleInterop": true, /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */ + // "preserveSymlinks": true, /* Disable resolving symlinks to their realpath. This correlates to the same flag in node. */ + "forceConsistentCasingInFileNames": true, /* Ensure that casing is correct in imports. */ + + /* Type Checking */ + "strict": true, /* Enable all strict type-checking options. */ + // "noImplicitAny": true, /* Enable error reporting for expressions and declarations with an implied 'any' type. */ + // "strictNullChecks": true, /* When type checking, take into account 'null' and 'undefined'. */ + // "strictFunctionTypes": true, /* When assigning functions, check to ensure parameters and the return values are subtype-compatible. */ + // "strictBindCallApply": true, /* Check that the arguments for 'bind', 'call', and 'apply' methods match the original function. */ + // "strictPropertyInitialization": true, /* Check for class properties that are declared but not set in the constructor. */ + // "noImplicitThis": true, /* Enable error reporting when 'this' is given the type 'any'. */ + // "useUnknownInCatchVariables": true, /* Default catch clause variables as 'unknown' instead of 'any'. */ + // "alwaysStrict": true, /* Ensure 'use strict' is always emitted. */ + // "noUnusedLocals": true, /* Enable error reporting when local variables aren't read. */ + // "noUnusedParameters": true, /* Raise an error when a function parameter isn't read. */ + // "exactOptionalPropertyTypes": true, /* Interpret optional property types as written, rather than adding 'undefined'. */ + // "noImplicitReturns": true, /* Enable error reporting for codepaths that do not explicitly return in a function. */ + // "noFallthroughCasesInSwitch": true, /* Enable error reporting for fallthrough cases in switch statements. */ + // "noUncheckedIndexedAccess": true, /* Add 'undefined' to a type when accessed using an index. */ + // "noImplicitOverride": true, /* Ensure overriding members in derived classes are marked with an override modifier. */ + // "noPropertyAccessFromIndexSignature": true, /* Enforces using indexed accessors for keys declared using an indexed type. */ + // "allowUnusedLabels": true, /* Disable error reporting for unused labels. */ + // "allowUnreachableCode": true, /* Disable error reporting for unreachable code. */ + + /* Completeness */ + // "skipDefaultLibCheck": true, /* Skip type checking .d.ts files that are included with TypeScript. */ + "skipLibCheck": true /* Skip type checking all .d.ts files. */ + } +}