LRUCache
LRUCache.java 源码
package datastructure.hashtable.leetcode;
import java.util.LinkedHashMap;
import java.util.Map;
public class LRUCache extends LinkedHashMap<Integer, Integer> {
private final int capacity;
public LRUCache(int capacity) {
super(capacity, 0.75F, true);
this.capacity = capacity;
}
public int get(int key) {
return super.getOrDefault(key, -1);
}
public void put(int key, int value) {
super.put(key, value);
}
@Override
protected boolean removeEldestEntry(Map.Entry<Integer, Integer> eldest) {
return size() > this.capacity;
}
}
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