• Sep 13, 2023 •C S
0 likes • 5 views
/** * @param {number[]} nums * @param {number} target * @return {number[]} */ var twoSum = function(nums, target) { for(let i = 0; i < nums.length; i++) { for(let j = 0; j < nums.length; j++) { if(nums[i] + nums[j] === target && i !== j) { return [i, j] } } } };
• Nov 19, 2022 •CodeCatch
0 likes • 2 views
// `arr` is an array const clone = arr => arr.slice(0); // Or const clone = arr => [...arr]; // Or const clone = arr => Array.from(arr); // Or const clone = arr => arr.map(x => x); // Or const clone = arr => JSON.parse(JSON.stringify(arr)); // Or const clone = arr => arr.concat([]);
• Apr 10, 2025 •hasnaoui1
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const express = require('express') const mongoose = require('mongoose') const cors = require('cors') const dotenv = require('dotenv') const server = express() dotenv.config() server.use(express.json()) server.get('/' , (req , res)=>{ res.send('Hello') }) //4.lancement du serveur server.listen(process.env.PORT , ()=>{ console.log('server run on http://localhost:'+process.env.PORT) })
function formatDate(date) { return date.toLocaleDateString(); } function Comment(props) { return ( <div className="Comment"> <div className="UserInfo"> <img className="Avatar" src={props.author.avatarUrl} alt={props.author.name} /> <div className="UserInfo-name"> {props.author.name} </div> </div> <div className="Comment-text">{props.text}</div> <div className="Comment-date"> {formatDate(props.date)} </div> </div> ); } const comment = { date: new Date(), text: 'I hope you enjoy learning React!', author: { name: 'Hello Kitty', avatarUrl: 'https://placekitten.com/g/64/64', }, }; ReactDOM.render( <Comment date={comment.date} text={comment.text} author={comment.author} />, document.getElementById('root') );
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const countSubstrings = (str, searchValue) => { let count = 0, i = 0; while (true) { const r = str.indexOf(searchValue, i); if (r !== -1) [count, i] = [count + 1, r + 1]; else return count; } }; countSubstrings('tiktok tok tok tik tok tik', 'tik'); // 3 countSubstrings('tutut tut tut', 'tut'); // 4
//JavaScript program to swap two variables //take input from the users let a = prompt('Enter the first variable: '); let b = prompt('Enter the second variable: '); //using destructuring assignment [a, b] = [b, a]; console.log(`The value of a after swapping: ${a}`); console.log(`The value of b after swapping: ${b}`);