public class Test6 { //测试类
public static void main(String args[]){
PetShop shop = new PetShop();
shop.add(new Cat("wang",20));
shop.add(new Cat("ming",10));
shop.add(new Dog("wang",20));
shop.add(new Dog("ming",10));
Link all = shop.search("wang");
Object[] obj = all.toArray();
for(int x = 0 ; x < obj.length ; x ++){
System.out.println(obj[x]);
}
}
}
class Link{
private class Node{
private Object data; //保存数据
private Node next; //保存关系
public Node(Object data){
this.data = data;
}
public void addNode(Node newNode){ //添加新数据
if(this.next == null){
this.next = newNode;
}else{
this.next.addNode(newNode); //递归调用
}
}
public boolean containsNdoe(Object data){
if(data.equals(this.data)){
return true;
}else{
if(this.next != null){
return this.next.containsNdoe(data);
}else{
return false;
}
}
}
public Object getNode(int index){
if(Link.this.foot ++ == index){
return this.data;
}else{
return this.next.getNode(index);
}
}
public void setNode(int index,Object data){
if(Link.this.foot ++ == index){
this.data = data;
}else{
this.next.setNode(index, data);
}
}
public void removeNode(Node previous,Object data){
if(data.equals(this.data)){
previous.next = this.next;
}else{
this.next.removeNode(this, data);
}
}
public void toArraNode(){
Link.this.retArray[Link.this.foot ++] = this.data;
if(this.next != null){
this.next.toArraNode();
}
}
}
private Node root; //定义根节点
private int count = 0; //保存数据的个数
private int foot = 0; //定义小标
private Object[] retArray; //保存数据的数组
public void add(Object data){
if(data == null){
return ;
}
Node newNode = new Node(data);
if(this.root == null){
this.root = newNode;
}else{
this.root.addNode(newNode);
}
this.count ++;
}
public int size(){
return this.count;
}
public boolean isEmpty(){
return count == 0;
}
public Object get(int index){
if(index > count){
return null;
}else{
this.foot = 0;
return this.root.getNode(index);
}
}
public boolean contians(Object data){
if(data == null || this.root == null){
return false;
}
return this.root.containsNdoe(data);
}
public void set(int index,Object data){
if(index > this.count){
return ;
}
this.foot = 0;
this.root.setNode(index, data);
}
public Object[] toArray(){
if(this.root == null){
return null;
}
this.foot = 0;
this.retArray = new Object[this.count];
this.root.toArraNode();
return this.retArray;
}
public void remove(Object data){
if(this.contians(data)){
if(data.equals(this.root.data)){
this.root = this.root.next;
}else{
this.root.removeNode(this.root, data);
}
count --;
}
}
}
interface IPet{ //宠物接口，所有的宠物要满足此接口才可以
public String getName();
public int getAge();
}
class PetShop{ //定义宠物商店
private Link perts = new Link();
public void add(IPet pet){ //宠物添加
this.perts.add(pet);
}
public void delete(IPet pet){ //宠物删除
this.perts.remove(pet);
}
public Link search(String keyword){ //关键字查找，根据名字
Link result = new Link();
Object[] obj = this.perts.toArray();
for(int x = 0 ; x < obj.length ; x ++){
IPet p = (IPet) obj[x];
if(p.getName().contains(keyword)){
result.add(p);
}
}
return result;
}
}
class Cat implements IPet{
private String name;
private int age;
public Cat(String name,int age){
this.name = name;
this.age = age;
}
public String getName(){
return this.name;
}
public int getAge(){
return this.age;
}
public boolean equals(Object obj){
if(obj == this){
return true;
}
if(obj == null){
return false;
}
if(!(obj instanceof Cat)){
return false;
}
Cat c = (Cat) obj;
if(this.name.equals(c.name) && this.age == c.age){
return true;
}
return false;
}
@Override
public String toString() {
return "Cat [name=" + name + ", age=" + age + "]";
}
}
class Dog implements IPet{
private String name;
private int age;
public Dog(String name,int age){
this.name = name;
this.age = age;
}
public String getName(){
return this.name;
}
public int getAge(){
return this.age;
}
public boolean equals(Object obj){
if(obj == this){
return true;
}
if(obj == null){
return false;
}
if(!(obj instanceof Dog)){
return false;
}
Dog c = (Dog) obj;
if(this.name.equals(c.name) && this.age == c.age){
return true;
}
return false;
}
@Override
public String toString() {
return "Dog [name=" + name + ", age=" + age + "]";
}
}
