feat: 2025-10-29打卡

146.lru-cache.java

@@ -0,0 +1,38 @@
+/*
+ * @lc app=leetcode id=146 lang=java
+ *
+ * [146] LRU Cache
+ */
+
+// @lc code=start
+class LRUCache {
+    private LinkedHashMap<Integer, Integer> cache;
+    private int cap;
+
+    public LRUCache(int capacity) {
+        this.cap = capacity;
+        cache = new LinkedHashMap<>(capacity, 0.75f, true) {
+            @Override 
+            protected boolean removeEldestEntry(Map.Entry eldest) {
+                return this.size() > cap;
+            }
+        };
+    }
+    
+    public int get(int key) {
+        return cache.getOrDefault(key, -1);
+    }
+    
+    public void put(int key, int value) {
+        cache.put(key, value);
+    }
+}
+
+/**
+ * Your LRUCache object will be instantiated and called as such:
+ * LRUCache obj = new LRUCache(capacity);
+ * int param_1 = obj.get(key);
+ * obj.put(key,value);
+ */
+// @lc code=end
+