一、总结 一句话总结: 也就是array_random 的结果数组不会被打乱 //从推荐课程列表中随机选出 $recommend_lesson_num 个 //计算总课程数量 $now_lesson_num=count($lessons); if($now_lesson_num>=$recommend_lesson_num){ $lessons=array_random($lessons,$recommend_lesson_num); }else{ $lessons=array_...
array_rand works with associative arrays, returning random keys. associative_array.php <?php $capitals = [ "France" => "Paris", "Germany" => "Berlin", "Italy" => "Rome", "Spain" => "Madrid" ]; $randomCountry = array_rand($capitals); echo "Random capital: $capitals[$randomCountry...
I just wanna random chose one of these numbers but i can't Can you help me? I know,i should make an array from these numbers and then have a random number one of the length of the array. At the end take the component that shown by random number of length of array. But i can...
# randomArray(array)该函数可以打乱一维数组元素的顺序,这是随机过程array <Array> 一维数组export default{ data() { return { array: [1,2,3,4,5] } }, onLoad() { console.log(this.$u.randomArray(this.array)); } } ← 路由跳转 全局唯一标识符 → ...
* @param array - The array to select an element from. * @returns A random element from the array, or `null` if the array is empty. */ export function getRandomElement<T>(array: T[]): T | null { if (!Array.isArray(array) || array.length === 0) { return null; // Return...
I have a 200 x 1 matrix of random numbers and I want to remove 10 numbers from the array at random. Here is sample data i used: a = 0;%mean b = 1;%standard deviation random_num = b*randn(200,1)+a;%generates random numbers ...
random() * (i + 1)); // swap var temp = arr[index]; arr[index] = arr[i]; arr[i] = temp; } return arr; }; const noForArrayAutoGenerator = (len = 100, type = `number`) => { if (type === `number`) { // number array return [...``.padStart(len, ` `)].map((...
I have a 1x450 array and I want to choose 300 elements of this array randomly and create a new array with random elements I tried randi and randperm but these two didn't give me the answer I want What should I use instead Thanks in advance ...
npm install unique-random-array Usage importuniqueRandomArrayfrom'unique-random-array';constrandom=uniqueRandomArray([1,2,3,4]);console.log(random(),random(),random(),random());//=> 4 2 1 4 API uniqueRandomArray(array) Returns a function, that when called, will return a random element...
Returns an array containing pseudorandom numbers drawn from aWeibulldistribution. varout=weibull(10,2.0,5.0);// returns <Float64Array> The function has the following parameters: len: output array length. k: scale parameter. lambda: shape parameter. ...