function createLineParser() {
if (stack.length === 0 && cur === 0) {，更多细节参见旺商聊官方下载
实际题目往往需要先做一步转化（如循环数组、链表转数组、先排序再栈），再套上面模板即可。。业内人士推荐Line官方版本下载作为进阶阅读
I haven’t profiled how much better bubbletea v2 would be for this game. My intuition is that bubbletea v2 should be almost as bandwidth efficient as my implementation but non-trivially slower.，这一点在服务器推荐中也有详细论述