set pixel as candidate[seed]
Fictional coaches - BOMBAY, BUTTERMAKER, DALE, LASSO，更多细节参见heLLoword翻译官方下载
Find out which news stories from this month are real or fake with this quiz，这一点在51吃瓜中也有详细论述
while (this.stack.length && this.arr[this.stack[this.stack.length - 1]] <= cur) {