Sử dụng HashMap trong java
import java.util.HashMap; Khởi dựng HashMap (HashMap Contructor) HashMap hashMapName = new HashMap(); HashMap hashMapName = new HashMap(5); //The 5 sets the initial element capcaity. HashMap hashMapName = new HashMap(5, .9); //The 5 sets the initial element capcaity. //The .9 is the load factor. // The default load factor is .75. HashMap hashMapName = new HashMap(mapIn);…