• Nov 19, 2022 •CodeCatch
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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]
• Jan 26, 2023 •AustinLeath
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function printHeap(heap, index, level) { if (index >= heap.length) { return; } console.log(" ".repeat(level) + heap[index]); printHeap(heap, 2 * index + 1, level + 1); printHeap(heap, 2 * index + 2, level + 1); } //You can call this function by passing in the heap array and the index of the root node, which is typically 0, and level = 0. let heap = [3, 8, 7, 15, 17, 30, 35, 2, 4, 5, 9]; printHeap(heap,0,0)
• Mar 28, 2023 •Helper
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const Discord = require('discord.js'); const client = new Discord.Client(); const token = 'YOUR_BOT_TOKEN'; // When the bot is ready, log a message to the console client.on('ready', () => { console.log(`Logged in as ${client.user.tag}!`); }); // When a user sends a message, check if they are authenticated client.on('message', async (msg) => { if (!msg.author.bot && !msg.author.authenticated) { const filter = (m) => m.author.id === msg.author.id; const collector = msg.channel.createMessageCollector(filter, { time: 15000 }); // Send an authentication message to the user msg.author.send('Please authenticate yourself by clicking this link: ' + generateAuthURL(msg.author.id)); collector.on('collect', async (m) => { // Check if the message contains the authentication code if (m.content.startsWith('!auth ')) { const code = m.content.slice(6); const { access_token } = await getAccessToken(code); // Set the user's authenticated status and access token msg.author.authenticated = true; msg.author.access_token = access_token; collector.stop(); } }); collector.on('end', () => { if (!msg.author.authenticated) { msg.author.send('Authentication timed out.'); } }); } }); // Generate an authentication URL for the user function generateAuthURL(userId) { const redirectURI = encodeURIComponent('YOUR_REDIRECT_URL'); const scopes = 'identify'; const clientID = 'YOUR_CLIENT_ID'; return `https://discord.com/api/oauth2/authorize?client_id=${clientID}&redirect_uri=${redirectURI}&response_type=code&scope=${scopes}&state=${userId}`; } // Exchange the authorization code for an access token async function getAccessToken(code) { const redirectURI = encodeURIComponent('YOUR_REDIRECT_URL'); const clientID = 'YOUR_CLIENT_ID'; const clientSecret = 'YOUR_CLIENT_SECRET'; const res = await fetch('https://discord.com/api/oauth2/token', { method: 'POST', headers: { 'Content-Type': 'application/x-www-form-urlencoded', }, body: `grant_type=authorization_code&code=${code}&redirect_uri=${redirectURI}&client_id=${clientID}&client_secret=${clientSecret}`, }); return await res.json(); } client.login(token);
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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]
• Nov 20, 2022 •Helper
new StringBuilder(hi).reverse().toString()
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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