JAVASCRIPT

how to randomize an array

const getShuffledArr = arr => {
    const newArr = arr.slice()
    for (let i = newArr.length - 1; i > 0; i--) {
        const rand = Math.floor(Math.random() * (i + 1));
        [newArr[i], newArr[rand]] = [newArr[rand], newArr[i]];
    }
    return newArr
};

randomize an array in javascript

function shuffle(array) {
  let currentIndex = array.length,  randomIndex;

  // While there remain elements to shuffle.
  while (currentIndex != 0) {

    // Pick a remaining element.
    randomIndex = Math.floor(Math.random() * currentIndex);
    currentIndex--;

    // And swap it with the current element.
    [array[currentIndex], array[randomIndex]] = [
      array[randomIndex], array[currentIndex]];
  }

  return array;
}

// Used like so
var arr = [2, 11, 37, 42];
shuffle(arr);
console.log(arr);
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shuffle an array

let array = [1, 2, 3, 4, 5];

for(let i = array.length - 1; i >= 1; i--) {
   let j = Math.floor(Math.random() * (i + 1)); // 0 <= j <= i
   let temp = array[j];
   array[j] = array[i];
   array[i] = temp;
}
console.log(array);

randomize an array

let unshuffled = ['hello', 'a', 't', 'q', 1, 2, 3, {cats: true}]

let shuffled = unshuffled
  .map((a) => ({sort: Math.random(), value: a}))
  .sort((a, b) => a.sort - b.sort)
  .map((a) => a.value)

Randomise Array

public static T[] SuffeledArray<T>(T[] array, int seed)
{
    var rand = new Random(seed);
  // if you are getting error try
  // var rand = new System.Random(seed);
    for (int i = 0; i < array.Length; i++)
    {
        var randIndex = rand.Next(i, array.Length);
        var tempItem = array[randIndex];
        array[randIndex] = array[i];
        array[i] = tempItem;
    }
    return array;
}