实现一个将 52 张牌随机均等的分给四个人，比如输入 [0,1,2,3....51] ，输出[[1,2,16...],[4,3,6..],[....],[....]]

[lgwebdream]

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[lgwebdream]

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[523451928]

function shuffle(arr) {
let length = arr.length
while (length > 0) {
const randomIndex = Math.floor(Math.random() * length)
length -= 1;
[arr[length], arr[randomIndex]] = [arr[randomIndex], arr[length]]
}
return arr
}

const arr = Array.from({ length: 52 }).map((item, index) => index)
function generateArr(arr) {
const res = Array.from({ length: 4 }).map(item => [])
const shuffleArr = shuffle(arr)
for (let i = 0; i < shuffleArr.length; i++) {
const item = shuffleArr[i]
if (i <= 12) {
res[0].push(item)
} else if (i <= 25) {
res[1].push(item)
} else if (i <= 38) {
res[2].push(item)
} else {
res[3].push(item)
}
}
return res
}
generateArr(arr)

[qzruncode]

function deal() {
    const cards = [];
    for(let i = 0; i < 52; i++) {
      cards.push(i);
    }
    cards.sort((a, b) => (Math.ceil(Math.random() * 52) - 1) - b);
    return [cards.slice(0, 13), cards.slice(13, 26), cards.slice(26, 39), cards.slice(39, 52)];
  }

[AAA611]

function genPlayingCards(num = 52) {
  const playingCards = []
  for (let i = 0; i < num; i++) {
    playingCards.push(i)
  }
  return playingCards
}

function licensing(playingCards, persons = 4) {
  const len = playingCards.length
  let temp
  for (let i = 0; i < len; i++) {
    const index = Math.floor(Math.random() * (len - i))
    temp = playingCards[len - i - 1]
    playingCards[len - i - 1] = playingCards[index]
    playingCards[index] = temp
  }

  const n = Math.floor(len / persons)
  return [playingCards.slice(0, n), playingCards.slice(n, 2 * n), playingCards.slice(2 * n, 3 * n), playingCards.slice(3 * n, 4 * n)]
}
console.log(licensing(genPlayingCards()));

[sun-shaohua]

function deal() {
const cards = [];
for (let i = 1; i < 53; i++) {
cards.push(i);
}
cards.sort((a, b) => (Math.random() - 0.5));
console.log(cards)
return [cards.slice(0, 13), cards.slice(13, 26), cards.slice(26, 39), cards.slice(39, 52)];
}