我有商家和消费者的应用程序。登录消费者可以使用他们自己的（消费者邮政编码）邮政编码搜索商家。
匹配的商家（商家的邮政编码）与消费者的邮政编码显示在谷歌地图上。所以我在下面的任务中遇到了问题： -
If there are no merchants matching the consumer ZIP code, then the map should zoom out to show one level of zoom beyond the next nearest merchant.
I want to get the next nearest zip code from the list of merchants' zip code. Which already we have in our database.