javascript - 将数组条目加入唯一关系 (JS)

Question

我有一个字符串数组。

let people = ['Bill', 'Paul', 'William', 'Francis'];

我想创建随机对:

Bill -> Paul

Paul -> Francis

William -> Bill

Francis -> William

所有情侣必须是唯一的，第二列中的每个名字只能使用一次。

这是我的代码，但它没有按预期工作。

let receivers = people.sort(function() { return 0.5 - Math.random() });

for (let i in people) 
{  
    console.log(people[i] +' -> '+ receivers[i]);
}

有什么建议吗？

Answer 1

从How to randomize (shuffle) a JavaScript array?:中获取随机数组并将它与下一个元素像一个圆一样分割

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

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

    // Pick a remaining element...
    randomIndex = Math.floor(Math.random() * currentIndex);
    currentIndex -= 1;

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

  return array;
}
let people = ['Bill', 'Paul', 'William', 'Francis'];
shuffle(people);
for(var i=0;i<people.length;i++){
  console.log(people[i]+" -> "+people[(i+1<people.length)?i+1:0]);
}