• Nov 19, 2022 •CodeCatch
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const geometricProgression = (end, start = 1, step = 2) => Array.from({ length: Math.floor(Math.log(end / start) / Math.log(step)) + 1, }).map((_, i) => start * step ** i); geometricProgression(256); // [1, 2, 4, 8, 16, 32, 64, 128, 256] geometricProgression(256, 3); // [3, 6, 12, 24, 48, 96, 192] geometricProgression(256, 1, 4); // [1, 4, 16, 64, 256]
• 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) })
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const getURLParameters = url => (url.match(/([^?=&]+)(=([^&]*))/g) || []).reduce( (a, v) => ( (a[v.slice(0, v.indexOf('='))] = v.slice(v.indexOf('=') + 1)), a ), {} );
function Clock(props) { return ( <div> <h1>Hello, world!</h1> <h2>It is {props.date.toLocaleTimeString()}.</h2> </div> ); } function tick() { ReactDOM.render( <Clock date={new Date()} />, document.getElementById('root') ); } setInterval(tick, 1000);
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const euclideanDistance = (a, b) => Math.hypot(...Object.keys(a).map(k => b[k] - a[k])); euclideanDistance([1, 1], [2, 3]); // ~2.2361 euclideanDistance([1, 1, 1], [2, 3, 2]); // ~2.4495
• Sep 13, 2023 •C S
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/** * @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] } } } };