我在Java中使用Play框架和Play-Morphia来使用MongoDb。我得到了一个实体消息,它的定义如下:public class Message{ public Date date; @Embedded public MessageBasicInfo basicInfo;MessageBasicInfo定义如下: publi
For the required hash-map implementation,1.Choose a suitable size of the hash-map, that is, the number of buckets.You will have to implement the following operations on the hash-map:
a.Delete a (key) from the hash-map (if prese