array.shuffle.js

Array.prototype.shuffle = function() {
  var tmp = this.slice(0);
  var res = [];
  var pos;
  for (var i = 0; i < this.length; i++) {
    pos = Math.floor(Math.random() * tmp.length);
    res.push(tmp.splice(pos, 1));
  }
  return "[" + res.join(", ") + "]";
}

• 3x memory
• O(n)

😞 😿