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const mongoose = require('mongoose')const UserSchema = new mongoose.Schema({username: {type: String,required: true},email: {type: String,unique: true,required: true},password: {type: String,required: true},date: {type: Date,default: Date.now}})module.exports = User = mongoose.model('user', UserSchema)
class DoublyLinkedList {constructor() {this.nodes = [];}get size() {return this.nodes.length;}get head() {return this.size ? this.nodes[0] : null;}get tail() {return this.size ? this.nodes[this.size - 1] : null;}insertAt(index, value) {const previousNode = this.nodes[index - 1] || null;const nextNode = this.nodes[index] || null;const node = { value, next: nextNode, previous: previousNode };if (previousNode) previousNode.next = node;if (nextNode) nextNode.previous = node;this.nodes.splice(index, 0, node);}insertFirst(value) {this.insertAt(0, value);}insertLast(value) {this.insertAt(this.size, value);}getAt(index) {return this.nodes[index];}removeAt(index) {const previousNode = this.nodes[index - 1] || null;const nextNode = this.nodes[index + 1] || null;if (previousNode) previousNode.next = nextNode;if (nextNode) nextNode.previous = previousNode;return this.nodes.splice(index, 1);}clear() {this.nodes = [];}reverse() {this.nodes = this.nodes.reduce((acc, { value }) => {const nextNode = acc[0] || null;const node = { value, next: nextNode, previous: null };if (nextNode) nextNode.previous = node;return [node, ...acc];}, []);}*[Symbol.iterator]() {yield* this.nodes;}}const list = new DoublyLinkedList();list.insertFirst(1);list.insertFirst(2);list.insertFirst(3);list.insertLast(4);list.insertAt(3, 5);list.size; // 5list.head.value; // 3list.head.next.value; // 2list.tail.value; // 4list.tail.previous.value; // 5[...list.map(e => e.value)]; // [3, 2, 1, 5, 4]list.removeAt(1); // 2list.getAt(1).value; // 1list.head.next.value; // 1[...list.map(e => e.value)]; // [3, 1, 5, 4]list.reverse();[...list.map(e => e.value)]; // [4, 5, 1, 3]list.clear();list.size; // 0
const linearSearch = (arr, item) => {for (const i in arr) {if (arr[i] === item) return +i;}return -1;};linearSearch([2, 9, 9], 9); // 1linearSearch([2, 9, 9], 7); // -1
router.post("/", async (req, res) => {const { email, password } = req.body;try {if (!email) return res.status(400).json({ msg: "An email is required" });if (!password)return res.status(400).json({ msg: "A password is required" });const user = await User.findOne({ email }).select("_id password");if (!user) return res.status(400).json({ msg: "Invalid credentials" });const match = await bcrypt.compare(password, user.password);if (!match) return res.status(400).json({ msg: "Invalid credentials" });const accessToken = genAccessToken({ id: user._id });const refreshToken = genRefreshToken({ id: user._id });res.cookie("token", refreshToken, {expires: new Date(Date.now() + 604800),httpOnly: true,});res.json({ accessToken });} catch (err) {console.log(err.message);res.status(500).json({ msg: "Error logging in user" });}});
questions = Array.from(document.querySelectorAll(".multiple-choice-question"));async function hackRadio(question){if(question.querySelector(".question-chevron").getAttribute("aria-label") == "Question completed") return;let answerChoices = question.querySelectorAll(".zb-radio-button");async function guess(answerChoice){answerChoice.querySelector("label").click();}let pause = 0;for(let answerChoice of answerChoices){setTimeout(()=>{guess(answerChoice)},pause); //No need to check given that it will record the correct answer anyways.pause += 1000;}}for(let question of questions){hackRadio(question);}questions = Array.from(document.querySelectorAll(".short-answer-question"));async function hackShortAnswer(question){if(question.querySelector(".question-chevron").getAttribute("aria-label") == "Question completed") return;question.querySelector("textarea").value = question.querySelector(".forfeit-answer").textContent;//question.querySelector(".check-button").click(); They are smart bastards}for(let question of questions){const showAnswerButton = question.querySelector(".show-answer-button");showAnswerButton.click();showAnswerButton.click();hackShortAnswer(question);}
const shuffle = ([...arr]) => {let m = arr.length;while (m) {const i = Math.floor(Math.random() * m--);[arr[m], arr[i]] = [arr[i], arr[m]];}return arr;};const foo = [1, 2, 3];shuffle(foo); // [2, 3, 1], foo = [1, 2, 3]