solenoid

var mongoObjectId = function () {
    var timestamp = (new Date().getTime() / 1000 | 0).toString(16);
    return timestamp + 'xxxxxxxxxxxxxxxx'.replace(/[x]/g, function() {
        return (Math.random() * 16 | 0).toString(16);
    }).toLowerCase();
};

AdilsonFuxe

var ListNode = function (val, next) {
  this.val = val === undefined ? 0 : val;
  this.next = !next ? null : next;
};

var MyLinkedList = function () {
  this.head = null;
};

/**