lru cache java

http://www.acmerblog.com/leetcode-lru-cache-lru-5745.html

acm之家的讲解是在是好，丰富

import java.util.LinkedHashMap;

public class LRUCache {

     private int capacity;

     private LinkedHashMap<Integer,Integer> map=null;

    

    public LRUCache(int capacity) {

        this.capacity=capacity;

        map=new LinkedHashMap<Integer,Integer>(16,0.75f,true){

            protected boolean removeEldestEntry(java.util.Map.Entry<Integer,Integer> eldest) {  

        

            return size()>LRUCache.this.capacity;

        



            

        }

        

    };

    }

    

    public int get(int key) {

        if(map.get(key)==null)

        {

            return -1;

        }

        return map.get(key);

        

    }

    

    public void set(int key, int value) {

        map.put(key,value);

        

        

    }

}