• 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 union = (...arr) => [...new Set(arr.flat())]; // Example union([1, 2], [2, 3], [3]); // [1, 2, 3]
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function Welcome(props) { return <h1>Hello, {props.name}</h1>; } function App() { return ( <div> <Welcome name="Sara" /> <Welcome name="Cahal" /> <Welcome name="Edite" /> </div> ); } ReactDOM.render( <App />, document.getElementById('root') );
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const bucketSort = (arr, size = 5) => { const min = Math.min(...arr); const max = Math.max(...arr); const buckets = Array.from( { length: Math.floor((max - min) / size) + 1 }, () => [] ); arr.forEach(val => { buckets[Math.floor((val - min) / size)].push(val); }); return buckets.reduce((acc, b) => [...acc, ...b.sort((a, b) => a - b)], []); }; bucketSort([6, 3, 4, 1]); // [1, 3, 4, 6]
const celsiusToFahrenheit = (celsius) => celsius * 9/5 + 32; const fahrenheitToCelsius = (fahrenheit) => (fahrenheit - 32) * 5/9; // Examples celsiusToFahrenheit(15); // 59 celsiusToFahrenheit(0); // 32 celsiusToFahrenheit(-20); // -4 fahrenheitToCelsius(59); // 15 fahrenheitToCelsius(32); // 0
• Oct 9, 2023 •Helper
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import React, { useState, useEffect } from 'react'; import Link from 'next/link'; export default function CookieBanner() { // Initialize with a default value (false if not previously set in localStorage) const [cookieConsent, setCookieConsent] = useState(() => localStorage.getItem('cookieConsent') === 'true' ? true : false ); useEffect(() => { const newCookieConsent = cookieConsent ? 'granted' : 'denied'; window.gtag('consent', 'update', { analytics_storage: newCookieConsent }); localStorage.setItem('cookieConsent', String(cookieConsent)); }, [cookieConsent]); return !cookieConsent && ( <div> <div> <p> We use cookies to enhance the user experience.{' '} <Link href='/privacy/'>View privacy policy</Link> </p> </div> <div> <button type="button" onClick={() => setCookieConsent(false)}>Decline</button> <button type="button" onClick={() => setCookieConsent(true)}>Allow</button> </div> </div> ) }