Function getRandomArrayElements

jd_senbeans.js:209–218

(arr, count)

}

function getRandomArrayElements(arr, count) {
  var shuffled = arr.slice(0), i = arr.length, min = i - count, temp, index;
  while (i-- > min) {
    index = Math.floor((i + 1) * Math.random());
    temp = shuffled[index];
    shuffled[index] = shuffled[i];
    shuffled[i] = temp;
  }
  return shuffled.slice(min);
}

async function help() {
  await new Promise((resolve) => {