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45 lines
992 B
45 lines
992 B
import java.util.HashMap;
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import java.util.Map;
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public class Pair<K,V>{
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private K key;
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private V value;
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public Pair(K key,V value){
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this.key=key;
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this.value=value;
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}
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public K getKey(){
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return key;
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}
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public V getValue(){
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return value;
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}
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public Pair<V,K> swap(){
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return new Pair<>(this.value,this.key);
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}
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public class Cache<K,V>{
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private Map<K,V> storage;
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public Cache(){
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this.storage=new HashMap<>();//字典类型
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}
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public void put(K key,V value){
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storage.put(key,value);
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}
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public V get(K key){
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return storage.get(key);
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}
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public V remove(K key){
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return storage.remove(key);
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}
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public int size(){
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return storage.size();
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}
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public boolean isEMpty(){
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return storage.isEmpty();
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}
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}
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}
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