From 10d13dc384805e1c58a2d32ef3ce838207f4f687 Mon Sep 17 00:00:00 2001 From: Lorenzo Iovino Date: Tue, 23 Jan 2024 12:33:54 +0100 Subject: [PATCH] first commit + challenge repeated-string --- .gitignore | 3 + README.md | 21 + package-lock.json | 506 ++++++++++++++++++++ package.json | 21 + src/main.spec.ts | 0 src/main.ts | 2 + src/repeated-string/repeated-string.spec.ts | 51 ++ src/repeated-string/repeated-string.ts | 22 + tsconfig.json | 115 +++++ 9 files changed, 741 insertions(+) create mode 100644 .gitignore create mode 100644 README.md create mode 100644 package-lock.json create mode 100644 package.json create mode 100644 src/main.spec.ts create mode 100644 src/main.ts create mode 100644 src/repeated-string/repeated-string.spec.ts create mode 100644 src/repeated-string/repeated-string.ts create mode 100644 tsconfig.json diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..a375727 --- /dev/null +++ b/.gitignore @@ -0,0 +1,3 @@ +node_modules +build +.idea \ No newline at end of file diff --git a/README.md b/README.md new file mode 100644 index 0000000..09a4651 --- /dev/null +++ b/README.md @@ -0,0 +1,21 @@ +

+ node-base-project +

+ +## Quick usage + +### 1) Start development +``` + npm run build:watch + npm run test:watch +``` + +### 2) Build +``` + npm run build +``` + +### 3) Run +``` + npm run start +``` \ No newline at end of file diff --git a/package-lock.json b/package-lock.json new file mode 100644 index 0000000..fa28582 --- /dev/null +++ b/package-lock.json @@ -0,0 +1,506 @@ +{ + "name": "node-base-project", + "version": "1.0.0", + "lockfileVersion": 3, + "requires": true, + "packages": { + "": { + "name": "node-base-project", + "version": "1.0.0", + "license": "ISC", + "devDependencies": { + "@types/node": "^20.11.5", + "tsx": "^4.7.0", + "typescript": "^5.3.3" + } + }, + "node_modules/@esbuild/aix-ppc64": { + "version": "0.19.11", + "resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.19.11.tgz", + "integrity": "sha512-FnzU0LyE3ySQk7UntJO4+qIiQgI7KoODnZg5xzXIrFJlKd2P2gwHsHY4927xj9y5PJmJSzULiUCWmv7iWnNa7g==", + "cpu": [ + "ppc64" + ], + "dev": true, + "optional": true, + "os": [ + 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"version": "1.0.0", + "description": "", + "main": "index.js", + "scripts": { + "start": "node build/main.js", + "build": "tsc -p tsconfig.json", + "build+start": "npm run build && npm run start", + "build:watch": "tsc -w -p tsconfig.json", + "test:watch": "node --import tsx --test --watch **/**/*.spec.ts", + "test": "node --import tsx --test **/**/*.spec.ts" + }, + "author": "", + "license": "ISC", + "devDependencies": { + "@types/node": "^20.11.5", + "tsx": "^4.7.0", + "typescript": "^5.3.3" + } +} diff --git a/src/main.spec.ts b/src/main.spec.ts new file mode 100644 index 0000000..e69de29 diff --git a/src/main.ts b/src/main.ts new file mode 100644 index 0000000..f1eeb03 --- /dev/null +++ b/src/main.ts @@ -0,0 +1,2 @@ +(() => { +})(); \ No newline at end of file diff --git a/src/repeated-string/repeated-string.spec.ts b/src/repeated-string/repeated-string.spec.ts new file mode 100644 index 0000000..cc3ce20 --- /dev/null +++ b/src/repeated-string/repeated-string.spec.ts @@ -0,0 +1,51 @@ +import {describe, it} from 'node:test'; +import * as assert from "node:assert"; +import {countA, countInstanceOfCharInAString} from "./repeated-string"; + +describe("countA", () => { + it("should return 0 if the s string is empty" , (t) => { + assert.equal(countA("", 0), 0); + }) + + it("should return 0 if the n is zero" , (t) => { + assert.equal(countA("", 0), 0); + }) + + it("should return 1 if the string is 'a' and n is 1", (t) => { + assert.equal(countA("a", 1), 1); + }) + + it("should return 2 if the string is 'a' and n is 2", (t) => { + assert.equal(countA("a", 2), 2); + }) + + it("should return 1 if the string is 'acab' and n is 2", (t) => { + assert.equal(countA("acab", 2), 1); + }) + + it("should return 4 if the string is 'abcac' and n is 10", (t) => { + assert.equal(countA("abcac", 10), 4); + }) + + it("should return 2 if the string is 'ababa' and n is 3", (t) => { + assert.equal(countA("ababa", 3), 2) + }); +}) + +describe("countInstanceOfCharInAString", () => { + it("should return 0 if the s string is empty" , (t) => { + assert.equal(countInstanceOfCharInAString("a", ""), 0); + }) + + it("should return 0 if the char is empty" , (t) => { + assert.equal(countInstanceOfCharInAString("", "hola"), 0); + }) + + it("should return 0 if the char is empty and the string is empty" , (t) => { + assert.equal(countInstanceOfCharInAString("", ""), 0); + }) + + it("should return 3 if the char is 'a' and the string is 'aaa'" , (t) => { + assert.equal(countInstanceOfCharInAString("a", "aaa"), 3); + }) +}) diff --git a/src/repeated-string/repeated-string.ts b/src/repeated-string/repeated-string.ts new file mode 100644 index 0000000..313c332 --- /dev/null +++ b/src/repeated-string/repeated-string.ts @@ -0,0 +1,22 @@ + +export function countInstanceOfCharInAString(char: string, s: string) { + let count = 0; + for(let i = 0; i < s.length; i++) { + if(s[i] === char) { + count++; + } + } + return count; +} +export function countA(s: string, n: number): number { + let count = 0; + if(n <= s.length) { + count = countInstanceOfCharInAString('a', s.slice(0, n)); + } else { + const quotient = Math.floor(n/s.length) + const reminder = n % s.length; + count = (countInstanceOfCharInAString('a', s) * quotient) + + countInstanceOfCharInAString('a', s.slice(0, reminder)); + } + return count; +} \ No newline at end of file diff --git a/tsconfig.json b/tsconfig.json new file mode 100644 index 0000000..021d9c2 --- /dev/null +++ b/tsconfig.json @@ -0,0 +1,115 @@ +{ + "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 legacy experimental 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": "node10", /* 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. */ + // "allowImportingTsExtensions": true, /* Allow imports to include TypeScript file extensions. Requires '--moduleResolution bundler' and either '--noEmit' or '--emitDeclarationOnly' to be set. */ + // "resolvePackageJsonExports": true, /* Use the package.json 'exports' field when resolving package imports. */ + // "resolvePackageJsonImports": true, /* Use the package.json 'imports' field when resolving imports. */ + // "customConditions": [], /* Conditions to set in addition to the resolver-specific defaults when resolving imports. */ + // "resolveJsonModule": true, /* Enable importing .json files. */ + // "allowArbitraryExtensions": true, /* Enable importing files with any extension, provided a declaration file is present. */ + // "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. */ + // "inlineSourceMap": true, /* Include sourcemap files inside the emitted JavaScript. */ + // "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": "./build", /* 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. */ + // "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. */ + // "verbatimModuleSyntax": true, /* Do not transform or elide any imports or exports not marked as type-only, ensuring they are written in the output file's format based on the 'module' setting. */ + // "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. */ + }, + "include": [ + "src" + ], + "exclude": [ + "**/*.spec.ts" + ] +}