diff --git a/w8/.DS_Store b/w8/.DS_Store
new file mode 100644
index 0000000..0311984
Binary files /dev/null and b/w8/.DS_Store differ
diff --git a/w8/work8/.gitignore b/w8/work8/.gitignore
new file mode 100644
index 0000000..13275f1
--- /dev/null
+++ b/w8/work8/.gitignore
@@ -0,0 +1,30 @@
+### IntelliJ IDEA ###
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+.kotlin
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store
\ No newline at end of file
diff --git a/w8/work8/.idea/.gitignore b/w8/work8/.idea/.gitignore
new file mode 100644
index 0000000..b6b1ecf
--- /dev/null
+++ b/w8/work8/.idea/.gitignore
@@ -0,0 +1,10 @@
+# 默认忽略的文件
+/shelf/
+/workspace.xml
+# 已忽略包含查询文件的默认文件夹
+/queries/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
+# 基于编辑器的 HTTP 客户端请求
+/httpRequests/
diff --git a/w8/work8/.idea/misc.xml b/w8/work8/.idea/misc.xml
new file mode 100644
index 0000000..6f29fee
--- /dev/null
+++ b/w8/work8/.idea/misc.xml
@@ -0,0 +1,6 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/w8/work8/.idea/modules.xml b/w8/work8/.idea/modules.xml
new file mode 100644
index 0000000..6e97e66
--- /dev/null
+++ b/w8/work8/.idea/modules.xml
@@ -0,0 +1,8 @@
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/w8/work8/src/Cache.java b/w8/work8/src/Cache.java
new file mode 100644
index 0000000..41e0707
--- /dev/null
+++ b/w8/work8/src/Cache.java
@@ -0,0 +1,58 @@
+import java.util.*;
+
+/**
+ * 泛型缓存类，支持基本的增删查操作
+ * @param 键类型
+ * @param 值类型
+ */
+public class Cache {
+ private Map map;
+ private int maxSize;
+
+ public Cache(int maxSize) {
+ this.maxSize = maxSize;
+ this.map = new LinkedHashMap(maxSize, 0.75f, true) {
+ @Override
+ protected boolean removeEldestEntry(Map.Entry eldest) {
+ return size() > maxSize;
+ }
+ };
+ }
+
+ public void put(K key, V value) {
+ map.put(key, value);
+ }
+
+ public V get(K key) {
+ return map.get(key);
+ }
+
+ public boolean containsKey(K key) {
+ return map.containsKey(key);
+ }
+
+ public V remove(K key) {
+ return map.remove(key);
+ }
+
+ public int size() {
+ return map.size();
+ }
+
+ public void clear() {
+ map.clear();
+ }
+
+ public Set keySet() {
+ return map.keySet();
+ }
+
+ public Collection values() {
+ return map.values();
+ }
+
+ @Override
+ public String toString() {
+ return "Cache{" + map + "}";
+ }
+}
\ No newline at end of file
diff --git a/w8/work8/src/Pair.java b/w8/work8/src/Pair.java
new file mode 100644
index 0000000..316064d
--- /dev/null
+++ b/w8/work8/src/Pair.java
@@ -0,0 +1,41 @@
+/**
+ * 泛型 Pair 类，用于存储两个相关联的对象
+ * @param 键类型
+ * @param 值类型
+ */
+public class Pair {
+ 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;
+ }
+
+ /**
+ * 交换 key 和 value 的值
+ * 注意：仅当 K 和 V 类型可相互赋值时有效
+ */
+ public void swap() {
+ // 使用 Object 临时存储，强制转换（假设类型兼容）
+ Object temp = key;
+ key = (K) value;
+ value = (V) temp;
+ }
+
+ @Override
+ public String toString() {
+ return "Pair{" +
+ "key=" + key +
+ ", value=" + value +
+ '}';
+ }
+}
\ No newline at end of file
diff --git a/w8/work8/src/Test.java b/w8/work8/src/Test.java
new file mode 100644
index 0000000..6f94589
--- /dev/null
+++ b/w8/work8/src/Test.java
@@ -0,0 +1,21 @@
+public class Test {
+ public static void main(String[] args) {
+ // 测试 Pair
+ Pair pair = new Pair<>("hello", 123);
+ System.out.println("原始: " + pair);
+
+ pair.swap();
+ System.out.println("交换后: " + pair); // 输出: Pair{key=123, value=hello}
+
+ // 测试 Cache
+ Cache cache = new Cache<>(3);
+ cache.put("a", 1);
+ cache.put("b", 2);
+ cache.put("c", 3);
+ System.out.println("缓存内容: " + cache);
+
+ System.out.println("获取 a: " + cache.get("a"));
+ cache.put("d", 4); // 超出容量，移除最久未使用的 "a"
+ System.out.println("添加 d 后: " + cache);
+ }
+}
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diff --git a/w8/work8/work8.iml b/w8/work8/work8.iml
new file mode 100644
index 0000000..c90834f
--- /dev/null
+++ b/w8/work8/work8.iml
@@ -0,0 +1,11 @@
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/w8/work8/泛型作业 b/w8/work8/泛型作业
new file mode 100644
index 0000000..0786f2c
--- /dev/null
+++ b/w8/work8/泛型作业
@@ -0,0 +1,38 @@
+/**
+ * 泛型 Pair 类，用于存储两个相关联的对象
+ * @param 键类型
+ * @param 值类型
+ */
+public class Pair {
+ 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;
+ }
+
+ /**
+ * 交换 key 和 value 的值（注意：仅适用于可互换类型的场景）
+ * 注意：如果 K 和 V 类型不同，交换后可能语义不一致
+ */
+ public void swap() {
+ // 使用 Object 临时存储，再交换
+ Object temp = key;
+ key = value;
+ value = (V) temp; // 强转，需确保类型兼容
+ }
+
+ @Override
+ public String toString() {
+ return "(" + key + ", " + value + ")";
+ }
+}