js随机抽取

function getRandomElement(array) {
    return array[Math.floor(Math.random() * array.length)];
}

const fruits = ['apple', 'banana', 'cherry', 'date'];
console.log(getRandomElement(fruits)); // 输出可能是 'banana'

function getRandomElements(array, count) {
    if (count > array.length) {
        throw new Error('Count cannot be greater than array length');
    }
    const result = [];
    const tempArray = [...array];
    for (let i = 0; i < count; i++) {
        const randomIndex = Math.floor(Math.random() * tempArray.length);
        result.push(tempArray.splice(randomIndex, 1)[0]);
    }
    return result;
}

const numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
console.log(getRandomElements(numbers, 3)); // 输出可能是 [4, 7, 2]

const seedrandom = require('seedrandom');
const rng = seedrandom('yourSeedHere');

function getRandomElement(array) {
    return array[Math.floor(rng() * array.length)];
}

function shuffle(array) {
    for (let i = array.length - 1; i > 0; i--) {
        const j = Math.floor(Math.random() * (i + 1));
        [array[i], array[j]] = [array[j], array[i]];
    }
    return array;
}

const shuffledNumbers = shuffle([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]);
console.log(shuffledNumbers.slice(0, 3)); // 输出可能是 [4, 7, 2]