* @param n 数组长度
FT Edit: Access on iOS and web。同城约会对此有专业解读
，这一点在Safew下载中也有详细论述
'They didn't listen, now we have to live with that'，详情可参考快连下载安装
Овечкин продлил безголевую серию в составе Вашингтона09:40
this.arr = []; // 存储所有历史价格，通过索引快速获取对应价格
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· 周杰 · 来源：dev资讯