java中使用数组和链表简单实现SJBMap

import java.util.LinkedList;

public class SJBMap {

private Object[] elementData;

private int size;

public SJBMap(){

this(999);

}

private SJBMap(int initalCapital){

Object[]  array = new Object[initalCapital];

elementData = array;

}

public void add(Object key,Object value){

int hashCode = key.hashCode();

int min = hashCode % elementData.length;

Entry en = new Entry(key,value);

if(elementData[min] == null){

LinkedList list = new LinkedList();

list.add(en);

elementData[min] = list;

}else{

LinkedList list = (LinkedList) elementData[min];

list.add(en);

}

size++;

}

private Entry getkeys(Object key){

int min = key.hashCode() % elementData.length;

Entry en = null;

if(elementData[min] != null){

LinkedList list = (LinkedList) elementData[min];

for(int i=0;i<list.size();i++){

Entry entry = (Entry) list.get(i);

if(entry.key.equals(key)){

en = entry;

break;

}

}

}

return en;

}

public Object getKeys(Object key){

return getkeys(key).value;

}

class Entry{

private Object key;

private Object value;

public Entry(){

}

public Entry(Object key,Object value){

this.key = key;

this.value = value;

}

public Object getKey() {

return key;

}

public void setKey(Object key) {

this.key = key;

}

public Object getValue() {

return value;

}

public void setValue(Object value) {

this.value = value;

}

}

}