上传文件至 'W8周梓浩202506050319'

W8周梓浩202506050319/Pair.java

@@ -0,0 +1,45 @@
+import java.util.HashMap;
+import java.util.Map;
+
+public class Pair<K,V>{
+    private K key;
+    private V value;
+
+    public Pair(K key,V value){
+        this.key=key;
+        this.value=value;
+    }
+    public K getKey(){
+        return key;
+    }
+    public V getValue(){
+        return value;
+    }
+
+    public Pair<V,K> swap(){
+        return new Pair<>(this.value,this.key);
+    }
+
+
+    public class Cache<K,V>{
+        private Map<K,V> storage;
+        public Cache(){
+            this.storage=new HashMap<>();//字典类型
+        }
+        public void put(K key,V value){
+            storage.put(key,value);
+        }
+        public V get(K key){
+            return storage.get(key);
+        }
+        public V remove(K key){
+            return storage.remove(key);
+        }
+        public int size(){
+            return storage.size();
+        }
+        public boolean isEMpty(){
+            return storage.isEmpty();
+        }
+    }
+}