From 0d78a67acc8c89d01981757b7ffbdc6b56c16b0f Mon Sep 17 00:00:00 2001
From: ZhangJinxuan <2194936226@qq.com>
Date: Tue, 28 Apr 2026 11:34:34 +0800
Subject: [PATCH] add week8 code

---
 w8/集合键值转换.java | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 w8/集合键值转换.java

diff --git a/w8/集合键值转换.java b/w8/集合键值转换.java
new file mode 100644
index 0000000..f97b1e6
--- /dev/null
+++ b/w8/集合键值转换.java
@@ -0,0 +1,23 @@
+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 void setKey(K key){
+        this.key=key;
+    }
+    public void setValue(V value){
+        this.value=value;
+    }
+    public static <K,V> Pair<V,K> swap(Pair<K,V> pair){
+        return new Pair<>(pair.getValue(), pair.getKey());
+    }
+}
\ No newline at end of file