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); } }