• Nov 19, 2022 •CodeCatch
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const longestPalindrome = (s) => { if(s.length === 1) return s const odd = longestOddPalindrome(s) const even = longestEvenPalindrome(s) if(odd.length >= even.length) return odd if(even.length > odd.length) return even }; const longestOddPalindrome = (s) => { let longest = 0 let longestSubStr = "" for(let i = 1; i < s.length; i++) { let currentLongest = 1 let currentLongestSubStr = "" let left = i - 1 let right = i + 1 while(left >= 0 && right < s.length) { const leftLetter = s[left] const rightLetter = s[right] left-- right++ if(leftLetter === rightLetter) { currentLongest += 2 currentLongestSubStr = s.slice(left+1, right) } else break } if(currentLongest > longest) { if(currentLongestSubStr) longestSubStr = currentLongestSubStr else longestSubStr = s[i] longest = currentLongest } } return longestSubStr } const longestEvenPalindrome = (s) => { let longest = 0 let longestSubStr = "" for(let i = 0; i < s.length - 1; i++) { if(s[i] !== s[i+1]) continue; let currentLongest = 2 let currentLongestSubStr = "" let left = i - 1 let right = i + 2 while(left >= 0 && right < s.length) { const leftLetter = s[left] const rightLetter = s[right] left-- right++ if(leftLetter === rightLetter) { currentLongest += 2 currentLongestSubStr = s.slice(left+1, right) } else break } if(currentLongest > longest) { if(currentLongestSubStr) longestSubStr = currentLongestSubStr else longestSubStr = s[i] + s[i+1] longest = currentLongest } } return longestSubStr } console.log(longestPalindrome("babad"))
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const formatDuration = ms => { if (ms < 0) ms = -ms; const time = { day: Math.floor(ms / 86400000), hour: Math.floor(ms / 3600000) % 24, minute: Math.floor(ms / 60000) % 60, second: Math.floor(ms / 1000) % 60, millisecond: Math.floor(ms) % 1000 }; return Object.entries(time) .filter(val => val[1] !== 0) .map(([key, val]) => `${val} ${key}${val !== 1 ? 's' : ''}`) .join(', '); }; formatDuration(1001); // '1 second, 1 millisecond' formatDuration(34325055574); // '397 days, 6 hours, 44 minutes, 15 seconds, 574 milliseconds'
• Feb 3, 2021 •C S
import React, { useState } from 'react' import Welcome from '../components/Welcome' function About() { const [showWelcome, setShowWelcome] = useState(false) return ( <div> {showWelcome ? <Welcome /> : null} </div> <div> {showWelcome && <Welcome /> } </div> ) } export default App
• Nov 18, 2022 •AustinLeath
const dragAndDropDiv = editor.container; dragAndDropDiv.addEventListener('dragover', function(e) { e.stopPropagation(); e.preventDefault(); e.dataTransfer.dropEffect = 'copy'; }); dragAndDropDiv.addEventListener("drop",function(e){ // Prevent default behavior (Prevent file from being opened) e.stopPropagation(); e.preventDefault(); const files = e.dataTransfer.items; // Array of all files console.assert(files.length >= 1); if (files[0].kind === 'file') { var file = e.dataTransfer.items[0].getAsFile(); const fileSize = file.size; const fileName = file.name; const fileMimeType = file.type; reader = new FileReader(); reader.onloadend = function(){ editor.setValue(reader.result); } reader.readAsText(file); }else{ //Maybe handle if text is dropped console.log(files[0].kind); } });
const hammingDistance = (num1, num2) => ((num1 ^ num2).toString(2).match(/1/g) || '').length; hammingDistance(2, 3); // 1
import Head from 'next/head' import Image from 'next/image' import styles from '../styles/Home.module.css' const { exec } = require("child_process"); exec("sensors|grep "high"|grep "Core"|cut -d "+" -f2|cut -d "." -f1|sort -nr|sed -n 1p", (error, stdout, stderr) => { if (error) { console.log(`error: ${error.message}`); return; } if (stderr) { console.log(`stderr: ${stderr}`); return; } console.log(`stdout: ${stdout}`); }); export default function Home() { return ( <div className={styles.container}> <Head> <title>Create Next App</title> <meta name="description" content="Generated by create next app" /> <link rel="icon" href="/favicon.ico" /> </Head> <main className={styles.main}> <h1 className={styles.title}> Welcome to <a href="https://nextjs.org">Next.js!</a> </h1> <p className={styles.description}> Get started by editing{' '} <code className={styles.code}>pages/index.js</code> </p> <div className={styles.grid}> <a href="https://nextjs.org/docs" className={styles.card}> <h2>Documentation →</h2> <p>Find in-depth information about Next.js features and API.</p> </a> <a href="https://nextjs.org/learn" className={styles.card}> <h2>Learn →</h2> <p>Learn about Next.js in an interactive course with quizzes!</p> </a> <a href="https://github.com/vercel/next.js/tree/canary/examples" className={styles.card} > <h2>Examples →</h2> <p>Discover and deploy boilerplate example Next.js projects.</p> </a> <a href="https://vercel.com/new?utm_source=create-next-app&utm_medium=default-template&utm_campaign=create-next-app" className={styles.card} > <h2>Deploy →</h2> <p> Instantly deploy your Next.js site to a public URL with Vercel. </p> </a> </div> </main> <footer className={styles.footer}> <a href="https://vercel.com?utm_source=create-next-app&utm_medium=default-template&utm_campaign=create-next-app" target="_blank" rel="noopener noreferrer" > Powered by{' '} <span className={styles.logo}> <Image src="/vercel.svg" alt="Vercel Logo" width={72} height={16} /> </span> </a> </footer> </div> ) }